University of California Division of War Research Reports, 1941-1953 (SAC 18)

OFF-SITE STORAGE: COLLECTION STORED OFF-SITE. ALLOW ONE WEEK FOR RETRIEVAL OF MATERIALS.

Extent: 8.0 Linear feet (8 records cartons)

The University of California Division of War Research reports consists of an incomplete set of unclassified UCDWR reports, Navy Radio and Sound Laboratory (NRSL) and Naval Electronics Laboratory (NEL) files, memoranda, pamphlets, manuals, training aids, and data notebooks.

The University of California Division of War Research (UCDWR) was created in response to an escalation of hostilities in Europe. In 1941, the National Defense Research Committee (NDRC) proposed a research and development program that would investigate methods for detecting submerged or partially submerged submarines. With the Navy's approval, two laboratories were set up. The Atlantic coast laboratory was located at the U.S. Navy Underwater Sound Laboratory in New London, Connecticut, and was operated under a contract with Columbia University. The Pacific coast laboratory was located at the U.S. Navy Radio and Sound Laboratory in San Diego, California, with the University of California acting as the contract agency. This was the first collaborative effort between the Navy and the University of California on wartime research.

The UCDWR concerned itself primarily with fundamental investigations of techniques and procedures for detecting and successfully combating submarines. Until the contracts were actually written up between NDRC and the universities, the Office of Scientific Research and Development (OSRD) assumed responsibility for the projects initiated by NDRC, and NDRC remained the directing body for the scientific programs. Contract OEMsr-30 between OSRD and the University of California was executed on August 15, 1941. At first, other names, such as the University of California Division of National Defense Research, and the San Diego Laboratory, were attached to the effort.

For many years UCDWR was located in the same building as the U.S. Navy Radio and Sound Laboratory (NRSL) at Point Loma. Problems of overcrowding and overlapping laboratory programs occurred with the rapid growth in UCDWR and NRSL personnel. The Navy helped to alleviate some of these problems by supplying buildings for UCDWR. Changes in laboratory organization and cooperation from the Navy fostered a close working relationship among UCDWR and NRSL, including other naval commands, U.S. Fleet Sonar School, local submarine squadron, and units of the Pacific fleet.

Though UCDWR was originally conceived as a temporary wartime operation, it was decided that its work could continue under the direction of a more permanent organization. On March 1, 1945, the UCDWR program was transferred to the Navy Department as contract NObs-2074 from OSRD, and the Bureau of Ships assumed responsibility for the direction of the contractor's work. When the war ended abruptly on September 2, 1945, immediate action was taken to complete all the reports for final distribution, which took many months to finish.

At the same time the Navy Radio and Sound Laboratory was absorbed by the Navy Electronics Laboratory (NEL) which eventually inherited all the structures at the Point Loma facility. In late June 1946, UCDWR became the Marine Physical Laboratory. The University of California assumed responsibility for Task 10 of contract NObs-2074. The Marine Physical Laboratory (MPL) was officially opened on June 1, 1946, with Carl Eckart appointed as Director. It became part of Scripps Institution of Oceanography in April 1948.

The University of California Division of War Research reports consists of an incomplete set of unclassified UCDWR reports, Navy Radio and Sound Laboratory (NRSL) and Naval Electronics Laboratory (NEL) files, memoranda, pamphlets, manuals, training aids, and data notebooks. The Completion report... covering operations of the University of California Division of War Research... from 26 April 1941 to 30 June 1946 was prepared at the end of the contract period, highlighting the laboratory's history and organization. Additionally, it includes bibliographies detailing the technical reports produced and patents submitted during the project. The Completion report is found in box 6 of the collection, in the RESEARCH REPORTS series.

Arranged in five series: 1) SOUND FIELD DATA NOTEBOOKS; 2) INSTRUCTION MANUALS AND GUIDES; 3) RESEARCH REPORTS; 4) NAVY RADIO AND SOUND LABORATORY REPORTS; and 5) NAVY ELECTRONICS LABORATORY INTERNAL TECHNICAL MEMORANDA.

Further information on UCDWR can be found in SIO Subject Files (SAC 6) in folders with contract number "NObs-2074."

A small selection of photographs of UCDWR activities may be found in the SIO Photographs Collection, SMC 59.

Custodial History/Provenance

In 1957, the UCDWR records were sent to federal record centers. This collection of photocopies of unclassified reports was received by the Central University Library in 1976 and transferred to the SIO Archives in 1985. The data notebooks were found in SIO archives in 1981. No further information is available about these accessions.

SIO archivist Deborah Day attempted to collect additional UCDWR organizational records and traced them from one naval repository to another, but was unable to obtain the official working records of the group. She did obtain copies of photographs captured by the project's photographer; the original photos and negatives had been submitted to the Navy.

In 1985, Day noted that Space and Naval Warfare Systems Command (SPAWAR) maintained a complete set of UCDWR reports, however this has not been recently verified.

Container List

SOUND FIELD DATA NOTEBOOKS

Scope and Contents of Series

Series 1) SOUND FIELD DATA NOTEBOOKS: Sound field investigations data, including plots, sound attenuation records, sound field data sheets, and ship drift position data collected on E. W. Scripps and U.S.S. Jasper. Notebook 10 is not held in the collection.

Box 1 Folder 1-3
Notebook 1, 1943 May 21-June 1
Box 1 Folder 4-5
Notebook 2, 1943 June 7-8
Box 1 Folder 6-8
Notebook 3, 1943 June 18-July 2
Box 1 Folder 9-10
Notebook 4, 1943 July 6-7
Box 1 Folder 11-13
Notebook 5, 1943 August 4-6
Box 1 Folder 14-16
Notebook 6, 1943 August 13-25
Box 1 Folder 17-19
Notebook 7, 1943 August 26-September 15
Box 1 Folder 20-23
Notebook 8, 1943 September 16-24
Box 1 Folder 24-28
Notebook 9, 1943 September 30-October 8
Box 1 Folder 29-31
Notebook 11, 1943 October 28-November 9
Box 1 Folder 32-33
Notebook 12, 1943 November 24-26
Box 1 Folder 34-35
Notebook 13, 1943 November 27-28
Box 1 Folder 36
Notebook 14, 1943 November 29
Box 1 Folder 37-39
Notebook 15, 1943 November 30

INSTRUCTION MANUALS AND GUIDES

Scope and Contents of Series

Series 2) INSTRUCTION MANUALS AND GUIDES: Arranged chronologically.

Box 1 Folder 40
Operation, maintenance and installation instructions for surface model RR-1 practice target (Navy project NS-97), 1942 December 14

UCDWR report no. U15. | Office of Scientific Research and Development. | File no. 91.32.

Box 1 Folder 41
Instructor's manual for use with the primary bearing teacher. Prepared by Training Division, 1943 May 1

UCDWR report no. U59. | Office of Scientific Research and Development. Contract OEMsr30.

Box 1 Folder 42
Preliminary instruction book for model SR-2 antisubmarine practice target equipment installation, operation and maintenance manual, 1943 May 14

UCDWR report no. U64. | Office of Scientific Research and Development. | File no. 91.32 (NS-144).

Box 1 Folder 43
Preliminary instruction book for model BR-1 antisubmarine practice target equipment with the model S1-AB amplifier. Installation, operation and maintenance manual, 1943 June 2

UCDWR report no. U70. | Office of Scientific Research and Development. | File no. 91.32 (NS-144).

Box 1 Folder 44
Instructor's manual for the advanced bearing teacher. Prepared by Training Division, 1943 June 8

UCDWR report no. U69. | Office of Scientific Research and Development. Contract OEMsr30.

Box 1 Folder 45
Preliminary instruction book for model BR-1 A/S practice target with the model S3-AB amplifier. Installation, operation, and maintenance manual, 1943 June 11

UCDWR report no. U71. | Office of Scientific Research and Development. | File no. 91.32 (NS-144).

Box 1 Folder 46
Operation, installation and alignment instructions for the Doppler doubler (as applied to the submarine signal company 755 receiver amplifier). Prepared by William A. Myers, Lt. Comdr. J. C. Myers, U.S.N. and Vaughn G. McKenney, 1943 August 4

UCDWR report no. U86. | Office of Scientific Research and Development. | File no. 02.311 (NS-142).

Box 1 Folder 47
Preliminary instruction manual for the shipboard anti-submarine attack teacher (SASAT A). Prepared by Clark F. Bradley and James M. Snodgrass, 1943 August 31

UCDWR report no. R94. | Office of Scientific Research and Development. | File no. 91.35.

Box 1 Folder 48
Supplementary notes on preliminary instruction book for model BR-1 A/S practice target with the model S3-AB amplifier, 1943 September 16

UCDWR report no. U71a. | Office of Scientific Research and Development. | File no. 91.32.

Box 1 Folder 49
Preliminary instructor's manual for use with the primary listening teacher, 1943 October 18

UCDWR report no. R119. | Office of Scientific Research and Development. Contract OEMsr30.

Box 1 Folder 50
Instructor's manual on Doppler drills and tests - UCDWR D-Series, 1943 October 30

UCDWR report no. R127.

Box 1 Folder 51
Preliminary manual FM sonar model I - Installation and operation (Experimental), 1943 December 1

Memorandum for file. | UCDWR report no. R134. | Office of Scientific Research and Development. | File no. 02.454.

Box 1 Folder 52
Instruction book for model SR5 practice target (Navy model oat practice target). Installation, operation and maintenance, 1944 January

UCDWR report no. R142. | Office of Scientific Research and Development. | File no. 91.236 (NS-144).

Box 1 Folder 53
Instructor's manual for model QFH sound training equipment (Conning teacher) - Edition A. Prepared by Training Division, 1944 January

UCDWR report no. R147. | Office of Scientific Research and Development. Contract OEMsr30.

Box 1 Folder 54
Instructor's manual for the model QFK shipboard sound operator trainer, 1944 March

UCDWR report no. R191. | File no. 91.234 (NS-152).

Box 1 Folder 55
Instructor's manual for model QFH sound training equipment (Conning teacher) - Edition B, 1944 March

UCDWR report no. R192. | File no. 91.222 (NS-97).

Box 1 Folder 56
Supplementary instruction book for anti-submarine practice targets, 1944 April

UCDWR report no. R200. | Office of Scientific Research and Development. | File no. 91.236 (NS-144).

Box 1 Folder 57
Preliminary instruction book for fm sonar model I no. 3. Installation, operation and maintenance, 1944 April

UCDWR report no. R208. | File no. 02.454 (NS-142).

Box 1 Folder 58
Preliminary instruction book for depth charge pattern records Mark I, mod O. Installation, operation, and maintenance, 1944 May

UCDWR report no. R173. | Office of Scientific Research and Development. | File no. 91.232 (NO-195).

Box 2 Folder 1
Preliminary instruction book for FM sonar model I, no. 5. Installation, operation and maintenance, 1944 June 12

UCDWR report no. R223. | Office of Scientific Research and Development. | File no. 02.454 (NS-142).

Box 2 Folder 2
Preliminary instruction book for the secure echo sounding equipments, model 2. Installation, operation and maintenance, 1944 June 13

UCDWR report no. S222. | Office of Scientific Research and Development. | File no. 09.21 (NS-211).

Box 2 Folder 3
Preliminary instruction manual for advance listening teacher, 1944 June 27

UCDWR report no. M232. | Office of Scientific Research and Development. | File no. 91.242 (NS-245).

Box 2 Folder 4
Preliminary Instruction Book. FM sonar model 1, no. 5 - Operation and maintenance, 1944 September 15

UCDWR report no. R223.1. | File no. 02.454 (NS-142).

Box 2 Folder 5
Preliminary instruction book for the secure echo sounding equipments, model 3. Installation, operation and maintenance, 1944 October 11

UCDWR report no. S222.1. | Office of Scientific Research and Development. | File no. 09.21 (NS-221).

Box 2 Folder 6
Instructor's manual - Echo recognition group training, 1944 October 15

UCDWR report no. M341.

Box 2 Folder 7
Preliminary instruction book (Revised edition). FM sonar model I, nos. 6 - 10 - Operation and maintenance, 1945 January 1
Box 2 Folder 8
Preliminary instruction manual for advanced listening teacher model 3, 1945 January 22

UCDWR report no. U291. | Office of Scientific Research and Development. | National Defense Research Committee, 6.1-sr30-2020. | File no. 91.242 (NS-245).

Box 2 Folder 9
Preliminary manual operation, maintenance and installation for echo recognition monitor recorder, model II, 1945 March 15

UCDWR report no. M305. | File no. 91.216.

Box 2 Folder 10
Submarine sound recognition group trainer instructor's manual - Preliminary edition, 1945 May 1

UCDWR report no. M310. | File no. 91.246.

Box 2 Folder 11
Preliminary Instruction Book. FM sonar model I, nos. 11-15 - Operation and maintenance. Prepared by Western Electric Company, Inc, 1945 May 12

UCDWR report no. R223.4.

Box 2 Folder 12
Preliminary Instruction Manual. CIC trainer model I with proposals for improvements and extensions, 1945 June 1

UCDWR report no. M320. | File no. 91.262.

Box 2 Folder 13
Preliminary Instruction Book. Secure echo sounding equipment (SESE) model 3 - Operation and maintenance, 1945 June 1

UCDWR report no. S222.2. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 09.21, problem n31959o. 3M3.

Box 2 Folder 14
Instructors manual for echo recognition refresher training (NavShips 91540), 1945 June 20

UCDWR report no. M330. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 91.216, problem 5H.

Box 2 Folder 15
Preliminary instruction manual. NAD-10 prime sound beacon - Inspection, stowage and maintenance, operation, 1945 July 10

UCDWR report no. SM329. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 09.453, problem 1A.

Box 2 Folder 16
Preliminary Instruction Manual. Sound recognition group trainer, 1945 July 20

UCDWR report no. M342. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 91.246, problem 5H.

Box 2 Folder 17
Preliminary Instruction Manual. NAD-6A sound beacon, 1945 July 20

UCDWR report no. SM332. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 09.453, problem 1A.

Box 2 Folder 18
Submarine sound recognition group trainer (Sonar training set AN/UQR-T1) - Revised instructor's manual (Second preliminary edition), 1945 September 1

UCDWR report no. M310.1. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 91.246.

Box 2 Folder 19
Preliminary Instruction Manual. CIC trainer model I with proposals for improvements and extensions, 1945 September 15

UCDWR report no. M320.1. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 91.262, problem 6B.

Box 2 Folder 20
Preliminary instruction book for the assisting ship projector model I serial no. 3334, 1946 January 21

UCDWR report no. M373. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 91.239, problem 5E.

Box 2 Folder 21
Preliminary instruction manual for the group operator trainer, 1946 February 8

UCDWR report no. M376. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 91.213, problem 5G.

Box 2 Folder 22-23
Preliminary instruction manual for the group listening teacher model CXKG (WCA portion), 1946 March 15

UCDWR report no. M380. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 91.247, problem 5A.

Box 2 Folder 24
Operating instructions for navy model CXKD expendable echo sounder, 1946 August 1

UCDWR report no. U418. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 02.135, problem U20CD.

Box 2 Folder 25
Preliminary instruction manual NAD-10A sound beacon, 1946 October 1

UCDWR report no. M412. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 09.452, problem 1A.

RESEARCH REPORTS

Scope and Contents of Series

Series 3) RESEARCH REPORTS: Arranged chronologically.

Box 2 Folder 26
Echo recognition training - Recorder traces, undated

UCDWR report no. U325, supplement.

Box 2 Folder 27
Multidirectional refraction microphone. Prepared by N. Most, 1942 June 23

Memorandum for file.

Box 2 Folder 28-29
Bi-weekly reports covering period June 29-December 26, 1942

No report for 1942 September 20-October 3. | Office of Scientific Research and Development | National Defense Research Committee, no. C-4.

Box 2 Folder 30
Explosive sound waves in the sea - Observations with a 2500~ moving-coil oscillograph. Prepared by T. F. Johnston and R. W. Raitt, 1942 September 16

Memorandum for file. | UCDWR report no. M10.

Box 2 Folder 31
Echo repeater target, surface model RR-1. Prepared by Edwin M. McMillan, David J. Evans and William A. Myers, 1942 November 12

UCDWR report no. U1. | Office of Scientific Research and Development, no. 1040. | National Defense Research Committee, C4-sr30-399. | File no. 91.32.

Box 2 Folder 32
Bearing accuracy at lower operating frequencies. Prepared by F. N. D. Kurie, 1942 November 21

UCDWR report no. U2. | Office of Scientific Research and Development. | National Defense Research Committee, no. C-4. | File no. 02.317.

Box 2 Folder 33
A Laboratory study of surface and internal wave motion. Prepared by Oceanographic Division, 1942 November 23

UCDWR report no. U325, supplement. | Office of Scientific Research and Development. | National Defense Research Committee, no. C-4. | File no. 01-95.

Box 2 Folder 34
Triplane. Prepared by D. E. Ross and F. N. D. Kurie, 1942 November 23

UCDWR report no. U4. | Office of Scientific Research and Development. | National Defense Research Committee, C4-sr30-402. | File no. 02-15.

Box 2 Folder 35
Reverberation studies at 24 KC. Prepared by Reverberation Group, 1942 November 23

UCDWR report no. U7. | Office of Scientific Research and Development. | National Defense Research Committee, C4-sr30-401. | File no. 01.40.

Box 2 Folder 36
Shape of a flexible rope towing a submerged body. Prepared by Glen D. Camp, 1942 November 30

Memorandum for file. | UCDWR report no. M5.

Box 2 Folder 37
Transmission of explosive impulses in the sea. Prepared by R. F. Johnston and R. W. Raitt, 1942 December 2

UCDWR report no. U8. | Office of Scientific Research and Development. | National Defense Research Committee, C4-sr30-403. | File no. 01.80.

Box 2 Folder 38
Magnetic close-proximity fuze. Prepared by S. C. Baden, 1942 December 19

UCDWR report no. S16. | Office of Scientific Research and Development. | National Defense Research Committee, 6.1-sr30-405. | File no. 51.20.

Box 2 Folder 39-40
Bi-weekly reports covering period December 27, 1942-June 26, 1943

UCDWR report no. U22, U26, U31, U33, U39, U44, U47, U52, U54, U60, U66, U72, U76. | Office of Scientific Research and Development. | National Defense Research Committee, 6.1-sr30-410-411, 413-414, 416-419, 671, 673-676.

Box 2 Folder 41
Magnetic flux-change fuze. Prepared by L. D. Statham, 1942 December 30

UCDWR report no. S11. | Office of Scientific Research and Development. | National Defense Research Committee, 6.1-sr30-407. | File no. 51.20.

Box 2 Folder 42
Frequency-modulation echo-ranging systems cobar, pribar, subsight. Prepared by Malcolm C. Henderson, 1942 December 30

UCDWR report no. U12. | Office of Scientific Research and Development. | National Defense Research Committee, 6.1-sr30-408. | File no. 02.41.

Box 2 Folder 43
Advanced bearing teacher. Prepared by Henry E. Hartig, Firth Piece and George A. Brettell, Jr., 1943 January 2

UCDWR report no. U18. | Office of Scientific Research and Development. | National Defense Research Committee, 6.1-sr30-409. | File no. 91.22.

Box 2 Folder 44
Sound-ranging conditions in the Japanese area winter season. Prepared by Oceanographic Section, 1943 January 4

UCDWR report no. U20. | National Defense Research Committee, 6.1-sr30-722. | File no. 01.91.

Box 2 Folder 45
Masking of echo by reverberation. Prepared by Carl Eckart, 1943 January 8

Memorandum for file. | UCDWR report no. M22.

Box 2 Folder 46-47
Bi-weekly report of Psychological Section and Training Group, 1943 January 11-October 4

UCDWR report no. ST1-19.

Box 2 Folder 48
Supplement to sound-ranging conditions of the north Pacific Ocean. Prepared by Oceanographic Section, 1943 January 20

Memorandum for file. | UCDWR report no. M24. | File no. 01.91.

Box 2 Folder 49
Sound-ranging conditions in the Japanese area. Prepared by Oceanographic Section, 1943 January 21

UCDWR report no. U9. | Office of Scientific Research and Development. | National Defense Research Committee, 6.1-sr30-722. | File no. 01.91.

Box 2 Folder 50
Outline of the proposed Fampas system. Prepared by C. A. Hisserich, 1943 January 25

Memorandum for file. | UCDWR report no. M30. | File no. 02.41.

Box 2 Folder 51
Measurements of the sounds of submarines by three independent measuring systems. Prepared by Vern O. Knudsen and L. J. Sivian, 1943 February 1

Office of Scientific Research and Development. | National Defense Research Committee, 6.1-sr30-723.

Box 2 Folder 52
Methods suitable for the calibration and use of an octave-band sound level meter. Prepared by R. W. Young, 1943 February 10

Memorandum for file. | UCDWR report no. M32. | File no. 01.33.

Box 2 Folder 53
Scattering of underwater sound by solid particles and air bubbles. Prepared by George E. Duvall, 1943 February 11

Memorandum for file. | UCDWR report no. M40. | File no. 01.40.

Box 2 Folder 54
The effect of turbulent motion on the rate of rise of bubbles in a wake. Prepared by John S. McNown, 1943 February 19

UCDWR report no. U25. | Office of Scientific Research and Development. | National Defense Research Committee, 6.1-sr30-731. | File no. 01.50.

Box 2 Folder 55
Subsight. Prepared by Malcolm C. Henderson, 1943 February 20

UCDWR report no. U12a. | Office of Scientific Research and Development. | National Defense Research Committee, 6.1-sr30-415. | File no. 02.413.

Box 3 Folder 1
Binaural listening gear. Prepared by C. H. Kean, 1943 February 25

Memorandum for file. | UCDWR report no. M35. | File no. 04.00.

Box 3 Folder 2
Data for the design of inductances wound on molybdenum permalloy cores. Prepared by R. S. Gales, 1943 February 25

Memorandum for file. | UCDWR report no. M37. | File no. 01.33.

Box 3 Folder 3
Towed submerged antisubmarine practice target - Model SR-2. Prepared by David J. Evans, T. Finley Burke and Donald G. Reed, 1943 February 25

UCDWR report no. U42. | Office of Scientific Research and Development. | File no. 91.32 (NS-144).

Box 3 Folder 4
Antisubmarine practice target - Keel model KR-1. Prepared by David J. Evans and Donald G. Reed, 1943 February 25

UCDWR report no. U45. | Office of Scientific Research and Development. | File no. 91.32 (NS-144).

Box 3 Folder 5
Antisubmarine practice target - Experimental buoy model BR-1. Prepared by David J. Evans, 1943 February 25

UCDWR report no. U53. | Office of Scientific Research and Development. | File no. 91.32 (NS-144).

Box 3 Folder 6
A Multi-channel electronic switch. Prepared by Sidney Bertram, 1943 March 1

UCDWR report no. U29. | Office of Scientific Research and Development. | File no. 02.41 (NS-142).

Box 3 Folder 7
Comprehensive outline for harbor survey reports. Prepared by UCDWR, 1943 March 3

Memorandum for file. | UCDWR report no. M36. | File no. 03.30.

Box 3 Folder 8
The Entrapment of bubbles in vortices. Prepared by John S. McNown, 1946 March 3

Memorandum for file. | UCDWR report no. M46. | File no. 01.50 (NS-141).

Box 3 Folder 9
Underwater sound output from submarine charging batteries. Prepared by Listening Section, 1943 March 4

Memorandum for file. | UCDWR report no. M43. | File no. 01.30.

Box 3 Folder 10
Blanking and screening by surface wakes. Prepared by Wake Studies Group, 1943 March 5

Memorandum for file. | UCDWR report no. M38. | File no. 01.50 (NS-141).

Box 3 Folder 11
Hydraulic mine fuze. Prepared by Raymond D. Atchley, 1943 March 11

Memorandum for file. | UCDWR report no. M41. | File no. 60.00.

Box 3 Folder 12
Variation of the sound field near the surface in deep water. Prepared by H. T. O'Neil and T. F. Johnston, 1943 March 16

UCDWR report no. U49. | Office of Scientific Research and Development. | File no. 01.70.

Box 3 Folder 13
The Doppler doubler and square-law amplification. Prepared by William A. Myers, 1943 April 1

Memorandum for file. | UCDWR report no. M48. | File no. 09.00.

Box 3 Folder 14
Volume reverberation scattering and attenuation vs. frequency. Prepared by Reverberation Group, 1943 April 13

UCDWR report no. U50. | Office of Scientific Research and Development. | National Defense Research Committee, 6.1-sr30-670. | File no. 01.40.

Box 3 Folder 15
Amplifier and power supply - Model S1-AB. Prepared by R. O. Burns, 1943 April 16

UCDWR report no. U51. | Office of Scientific Research and Development. | File no. 91.32 (NS-144).

Box 3 Folder 16
Amplifier and power supply - Model S2-AB. Prepared by R. O. Burns, 1943 April 16

UCDWR report no. U56. | Office of Scientific Research and Development. | File no. 91.32 (NS-144).

Box 3 Folder 17
High impedance preamplifier. Prepared by David C. Kalbfell, 1943 April 29

Memorandum for file. | UCDWR report no. M55. | File no. 01.20.

Box 3 Folder 18
Primary listening teacher. Prepared by Henry E. Hartig and George A. Brettell, Jr., 1943 April 30

UCDWR report no. U57. | Office of Scientific Research and Development. | National Defense Research Committee, 6.1-sr30-672. | File no. 91.23 (NS-97).

Box 3 Folder 19
Supplementary notes on a multi-channel-electronic switch. Prepared by Sidney Bertram, 1943 May 1

UCDWR report no. U29a. | Office of Scientific Research and Development. | File no. 02.41 (NS-142).

Box 3 Folder 20
An inertia contact bomb fuze for use on targets above or below the surface of the water. Prepared by Raymond D. Atchley, 1943 May 3

Memorandum for file. | UCDWR report no. M58. | File no. 51.10.

Box 3 Folder 21
Characteristics of some transducers made by UCDWR, 1947 May 7
Box 3 Folder 22
Acoustic measurements on surface wakes in San Diego harbor. Prepared by Richard R. Carhart and George E. Duvall, 1943 May 8

UCDWR report no. U62. | Office of Scientific Research and Development. | File no. 01.50 (NS-141).

Box 3 Folder 23
Reflection of light from a submarine model. Prepared by R. B. Tibby, 1943 May 12

Memorandum for file. | UCDWR report no. M61. | File no. 02.30.

Box 3 Folder 24
Reflection of sound in the ocean from temperature changes. Prepared by R. R. Carhart, 1943 May 17

UCDWR report no. U74. | Office of Scientific Research and Development. | National Defense Research Committee, 6.1-sr30-960. | File no. 01.95 (NS-140).

Box 3 Folder 25
Doppler doubler and square-law amplifier. Prepared by William A. Myers and Vaughn G. McKenney, 1943 May 20

UCDWR report no. U67. | Office of Scientific Research and Development. | File no. 02.311 (NS-142).

Box 3 Folder 26
A Streamlined cable depressor. Prepared by Albert R. Champion, 1943 May 25

Memorandum for file. | UCDWR report no. M68. | File no. 04.10.

Box 3 Folder 27
Preliminary survey of certain biological underwater sounds on the east coast of North America. Prepared by Martin W. Johnson, 1943 May 25

UCDWR report no. U63. | Office of Scientific Research and Development. | File no. 01.33 (NO-163).

Box 3 Folder 28
Airplane location with subsight. Prepared by C. G. McProud, 1943 May 29

Memorandum for file. | UCDWR report no. M65. | File no. 02.413 (NS-142).

Box 3 Folder 29
The Discrimination of transducers against reverberation. Prepared by Reverberation Group, 1943 May 31

UCDWR report no. U75. | Office of Scientific Research and Development. | File no. 01.40.

Box 3 Folder 30
Monitor microphone amplifier. Prepared by D. C. Kalbfell, 1943 June 24

Memorandum for file. | UCDWR report no. M77. | File no. 02.33.

Box 3 Folder 31
Bottom reverberation: dependence on frequency. Prepared by Reverberation Group, 1943 June 16

UCDWR report no. U79. | Office of Scientific Research and Development. | National Defense Research Committee, 6.1-sr-30-677. | File no. 01.40.

Box 3 Folder 32
Deep water tests of the through-the-hull sonic listening equipment. Prepared by T.F. Johnston, 1943 June 18

UCDWR report no. U73. | Office of Scientific Research and Development. | File no. 04.10.

Box 3 Folder 33-34
Bi-weekly report covering period June 27-December 25, 1943

UCDWR report no. U81, U83, U87, U91, U96, U105, U112, U117, U123, U128, U131, U137-138. | Office of Scientific Research and Development. | National Defense Research Committee, 6.1-sr30-678-680, 683, 685-687, 689-692, 1220-1221.

Box 3 Folder 35
A Curvature meter for use in disc recording. Prepared by L. W. Sepmeyer, 1943 June 28

Memorandum for file. | UCDWR report no. M78.

Box 3 Folder 36
Underwater ambient noise survey - Bahamas and east coast of Florida. Prepared by R. H. Fleming and D. A. Proudfoot, 1943 June 29

Memorandum for file. | UCDWR report no. M80. | File no. 01.33.

Box 3 Folder 37
Supplement to the triplane. Prepared by D. E. Ross and F. N. D. Kurie, 1943 June 29

UCDWR report no. U4a. | Office of Scientific Research and Development. | File no. 91.33.

Box 3 Folder 38
Late summer hydrographic conditions in the Japanese area, 1943 July

Preliminary Submarine Supplement to Hydrographic Office Publication No. 123, Asiatic Pilot, Volume II, The Japanese Archipelago. Collaborators: University of California Division of War Research,; National Defense Research Committee, Bureau of Ships, Navy Department. | UCDWR report no. U85.

Box 3 Folder 39
Device for obtaining bearing and range rate, to be used as an auxiliary to SASAT A. Prepared by Carl Eckart, 1943 July 15

Memorandum for file. | UCDWR report no. M82. | File no. 91.35.

Box 3 Folder 40
Proposed system for the rapid frequency analysis of an audio spectrum. Prepared by Sidney Bertram, 1943 July 16

Memorandum for file. | UCDWR report no. M84. | File no. 02.414.

Box 3 Folder 41
General information for staff members, 1943 August 1

UCDWR report no. F100.

Box 3 Folder 42
Mine detection with Cobar devices. Prepared by M. C. Henderson and A. H. Roshon, 1943 August 2

Memorandum for file. | UCDWR report no. M115. | File no. 02.411- 02.413.

Box 3 Folder 43
SASAT slide rule. Prepared by G. P Hartwell and L. I. Schiff, 1943 August 13

UCDWR report no. U90. | Office of Scientific Research and Development. | National Defense Research Committee, 6.1-sr30-682. | File no. 91.35.

Box 3 Folder 44
Echo ranging with explosive sound. Prepared by T. F. Johnston and T. McMillian, 1943 August 14

UCDWR report no. U88. | Office of Scientific Research and Development. | File no. 06.00.

Box 3 Folder 45
Primary conning teacher. Prepared by A. W. Melloh, 1943 August 14

UCDWR report no. U89. | Office of Scientific Research and Development. | National Defense Research Committee, 6.1-sr30-681. | File no. 91-27.

Box 3 Folder 46
Some theoretical studies of the propagation of sound in shallow water. Prepared by Glen D. Camp and Carl Eckart, 1943 August 15

UCDWR report no. U102. | Office of Scientific Research and Development. | File no. 01.70.

Box 3 Folder 47
Echoes from wakes. Prepared by Reverberation Group, 1943 August 24

Memorandum for file. | UCDWR report no. M99. | File no. 01.50.

Box 3 Folder 48
Object locator. Prepared by W. A. Myers, 1943 August 27

UCDWR report no. U92. | Office of Scientific Research and Development. | File no. 09.20.

Box 3 Folder 49
"Silent" fathometer. Prepared by George W. Downs, 1943 August 28

Memorandum for file. | UCDWR report no. M98. | File no. 09.21.

Box 3 Folder 50
System for recording reverberation as it occurs in the ocean. Prepared by Reverberation Group, 1943 August 28

UCDWR report no. M111. | Office of Scientific Research and Development. | National Defense Research Committee, 6.1-sr30-1202. | File no. 01.40.

Box 3 Folder 51
Shipboard anti-submarine attack teacher (SASAT A). Prepared by Clark F. Bradley, 1943 August 30

UCDWR report no. U93. | Office of Scientific Research and Development. | National Defense Research Committee, 6.1-sr30-684. | File no. 91.35.

Box 3 Folder 52
Test-retest reliability of the 6B audiometer under military conditions. Prepared by William J. Giese, 1943 August 30

UCDWR report no. U116. | Office of Scientific Research and Development. | National Defense Research Committee, 6.1-sr30-688. | File no. 91.11.

Box 3 Folder 53
Interim report on echo ranging at lower frequencies. Prepared by L. M. Langer, 1943 September 1

UCDWR report no. U109. | Office of Scientific Research and Development. | National Defense Research Committee, 6.1-sr30-1114. | File no. 02.317.

Box 3 Folder 54
Adjustment of the bathythermograph for errors in surface temperature and pressure. Prepared by John S. McNown, 1943 September 2-28

Memorandum for file. | UCDWR report no. M103. | File no. 01.93.

Box 3 Folder 55
Modification of a type CBM-55081 range indicator. Prepared by D. E. Ross, 1943 September 4

Memorandum for file. | UCDWR report no. M104. | File no. 02.30.

Box 3 Folder 56
FM sonar. Prepared by Malcolm C. Henderson and Charles A. Hisserich, 1943 September 4

UCDWR report no. U95. | Office of Scientific Research and Development. | File no. 02.414.

Box 3 Folder 57
Survey of biological underwater noises off the coast of California and in upper Puget Sound. Prepared by Martin W. Johnson, 1943 September 10

UCDWR report no. U100. | Office of Scientific Research and Development. | National Defense Research Committee, 6.1-sr30-1113. | File no. 01.33.

Box 3 Folder 58
Reverberation equalizer. Prepared by George W. Downs, Jr., 1943 September 18

UCDWR report no. U97. | Office of Scientific Research and Development. | National Defense Research Committee, 6.1-sr30-692. | File no. 02.316 (NS-142).

Box 3 Folder 59
Doppler effect in FM sonar. Prepared by M. C. Henderson, 1943 September 20

UCDWR report no. U107. | Office of Scientific Research and Development. | National Defense Research Committee, 6.1-sr30-1115. | File no. 02.414.

Box 3 Folder 60
Rapid-response thermometer. Prepared by D. C. Kalbfell, 1943 September 23

Memorandum for file. | UCDWR report no. M101. | File no. 01.95.

Box 3 Folder 61
Gas production with magnesium amalgam. Prepared by Milton Silverman, 1943 September 25

Memorandum for file. | UCDWR report no. M106. | File no. 09.41.

Box 3 Folder 62
Some general ideas concerning the transmission of sound in the deep sea. Prepared by Carl Eckart, 1943 September 28

Memorandum for file. | UCDWR report no. M108. | File no. 01.70.

Box 3 Folder 63
Interim report on the sound field of echo-ranging gear. Prepared by The U.S. Navy Radio and Sound Laboratory and the University of California Division of War Research, 1943 October 1

UCDWR report no. U113. | File no. 01.72.

Box 3 Folder 64
Conclusions derived from the analysis of transmission data obtained during harbor surveys, 1943 October 2

UCDWR report no. U110. | File no. 01.7.

Box 3 Folder 65
Bi-weekly report no. 1-25 covering period October 3, 1943-September 16, 1944

UCDWR report no. S118, S124b, S129b, S132b, S136b, S139b, S145b, S171b, S177b, S180b, S187b, S195b, S199b, S203b, S210b, S214b, S220b, S226b, S233b, S237b, S242b, S247b, S252b, S254b, S259b. | Office of Scientific Research and Development. | National Defense Research Committee, 6.1-sr30-1118-1119, 1121, 1123, 695, 698, 1223, 1227, 1231, 1235, 1238, 1404, 1410, 1416, 1502, 1508, 1514, 1520, 1524, 1528, 1534, 1693, 1743, 1748, 1753, 1759.

Box 3 Folder 66
The effect of the ship's roll on echo ranging. Prepared by John S. McNown and Carl Eckart, 1943 October 8

Memorandum for file. | UCDWR report no. M114. | File no. 02.30.

Box 3 Folder 67-68
Quadra-weekly progress report training group October 17, 1943-June 24, 1944

UCDWR report no. PR1-PR9. | Office of Scientific Research and Development. | National Defense Research Committee, 6.1-sr30-1080-1088.

Box 3 Folder 69
Some ambient water noise measurements in the fourteenth naval district. Prepared by Listening Section, 1943 October 22

Memorandum for file. | UCDWR report no. M122. | File no. 01.331.

Box 3 Folder 70
WEA-1 and WEA-2 adapters for SASAT. Prepared by Clark F. Bradley, 1943 October 22

UCDWR report no. U121. | Office of Scientific Research and Development. | File no. 91.35.

Box 3 Folder 71
Lloyd mirror effect in a variable velocity medium. Prepared by Richard B. Carhart, 1943 October 23

Memorandum for file. | UCDWR report no. M140. | File no. 01.92.

Box 3 Folder 72
Some shallow water sound propagation measurements in the thirteenth naval district. Prepared by Listening and Oceanographic Sections, 1943 October 25

Memorandum for file. | UCDWR report no. M126. | File no. 01.73 (NS-140), 03.30 (NO-163).

Box 3 Folder 73-74
Bi-weekly report no. 2-35 (Projects NS-164, NS-293, and NS-316), 1943 October 30-1945 February 9

UCDWR report no. S124a, S129a, S132a, S136a, S139a, S145a, S171a, S177a, S180a, S187a, S195a, S199a, S203a, S210a, S214a, S220a, S226a, S233a, S237, S242a, S247a , S252a, S254a, S259a, S265a, S272a, S275a, S279a, S282a, S286a, S288a, S293a, S298a. | Office of Scientific Research and Development. | National Defense Research Committee, 6.1-sr30-1120, 1122, 694, 697, 1222, 1226, 1230, 1234, 1237, 1403, 1409, 1415, 1501, 1507, 1513, 1519, 1523, 1527, 1533, 1692, 1742, 1747, 1752, 1758, 1866, 1872, 1875, 1879, 2012, 2015, 2018, 2022, 2026. | File no. 09.421 (NS-164), 09.45 (NS-293).

Box 3 Folder 75
Gas production with mixtures of magnesium amalgam and crystalline acids ("Bubblite"). Prepared by Milton Silverman, W. Bruce Beckley and M. L. Kyle, 1943 November 12

Memorandum for file. | UCDWR report no. M133. | File no. 09.44.

Box 3 Folder 76
Bi-weekly report no. 1-19 (Project NS-221), 1943 November 17-1944 July 28

UCDWR report no. S129c, S132c, S136c, S139c, S145c, S171c, S177c, S180c, S187c, S195c, S199c, S203c, S210c, S214c, S226c, S233c, S237c, S242c. | Office of Scientific Research and Development. | National Defense Research Committee, 6.1-sr30-1211, 1217, 696, 699, 1224, 1228, 1232, 1236, 1239, 1405, 1411, 1417, 1503, 1509, 1515, 1525, 1529, 1535, 1694. | File no. 09.21.

Box 3 Folder 77
Survey of the problem of maximum echo ranges (Preliminary draft). Prepared by Carl Eckart, 1943 November 20

UCDWR report no. U130. | Office of Scientific Research and Development. | File no. 01.92 (NS-140).

Box 3 Folder 78
Device for plotting rays in a medium of variable velocity. Prepared by L. I. Schiff, 1943 November 29

Memorandum for file. | UCDWR report no. M125. | File no. 01.92.

Box 3 Folder 79
Investigation of the power handling ability of 45 degree X-cut and Y-cut Rochelle salt crystals. Prepared by Francis X. Byrnes, 1943 November 30

Memorandum for file. | UCDWR report no. M175. | Office of Scientific Research and Development. Contract OEMsr30. | File no. 01.22.

Box 3 Folder 80
Buoyancy control. Prepared by R. D. Atchley, 1943 December 3

Memorandum for file. | UCDWR report no. M135. | File no. 09.44.

Box 3 Folder 81-82
Bi-weekly reports covering period December 26, 1943-June 24, 1944

UCDWR report no. U144, U170, U176, U181, U188, U194, U198, U202, U209, U213, U219, U224, U234. | National Defense Research Committee, 6.1-sr30-1225, 1229, 1233, 1401, 1407-1408, 1419, 1500, 1506, 1512, 1518, 1522, 1531. | File no. NS-139-142, NS-144, NS-160, NO-163, NS-308.

Box 3 Folder 83
Construction of a range-bearing plot for aid in ASW ship conning. Prepared by H. E. Hartig, 1943 December 29

Memorandum for file. | UCDWR report no. M183. | File no. 80.00.

Box 3 Folder 84
Oscillograms of 24 KC echoes from a destroyer and its wake. Prepared by Echo-Ranging Section, 1944 January 3

Memorandum for file. | UCDWR report no. M141. | File no. 01.50.

Box 3 Folder 85
Theory of secure echo-sounding - Project NS-221. Prepared by Carl Eckart, 1944 January 8

UCDWR report no. S143. | Office of Scientific Research and Development. | National Defense Research Committee, 6.1-sr30-1224.

Box 3 Folder 86
Underwater noise and the distribution of snapping shrimp with special reference to the Asiatic and the southwest and central Pacific areas. Prepared by Martin W. Johnson, 1944 January 15

UCDWR report no. U146. | Office of Scientific Research and Development.

Box 3 Folder 87
Measurements of 24 KC echoes from a destroyer and its wake. Prepared by George Duvall, 1944 January 20

Memorandum for file. | UCDWR report no. M141a. | File no. 01.50 (NS-141).

Box 3 Folder 88
Burgess sea cell operational data. Prepared by W. A. Myers, 1944 January 20

Memorandum for file. | UCDWR report no. M148. | File no. 09.40 (NS-164).

Box 3 Folder 89
Supplement to some ambient water noise measurements in the fourteenth naval district. Prepared by Listening Section, 1944 January 22

Memorandum for file. | UCDWR report no. M122a. | File no. 01.331 (NO-163).

Box 3 Folder 90
Preliminary report on echoes from a diving submarine and its wake. Prepared by Sonar Section, 1944 January 22

Memorandum for file. | UCDWR report no. M172. | File no. 01.50 (NS-141).

Box 3 Folder 91
Doppler effect in FM sonar (Mathematical appendix). Prepared by M. C. Henderson, 1944 February 8

Memorandum for file. | UCDWR report no. M184. | File no. 02.454 (NS-142).

Box 3 Folder 92
Quenching of underwater sound projectors. Prepared by Carl Eckart, 1944 February 16

Memorandum for file. | UCDWR report no. M178. | File no. 01.22.

Box 3 Folder 93
Tone duration as a factor in pitch discrimination. Prepared by E. G. Weaver, 1944 February 16

Memorandum for file. | UCDWR report no. M179. | File no. 01.41.

Box 3 Folder 94
Bi-weekly reports no. 1-26 (Projects NS-142 and NS-297), 1944 February 23-1945 February 9

Includes "Detection of small objects" and "Shallow water sonar" projects. | UCDWR report no. S180d, S187d, S195d, S199d, S203d, S210d, S214d, S220d, S226d, S233d, S237d, S242d, S247d, S252d, S254d, S259d, S263b, S265b, S272b, S275b, S279b, S282b, S286b, S288b, S293b, S298b. | National Defense Research Committee, 6.1-sr30-1400, 1406, 1412, 1418, 1504, 1510, 1516, 1521, 1526, 1530, 1536, 1695, 1744, 1749, 1754, 1860, 1864, 1877, 1873, 1876, 2010, 2013, 2016, 2019, 2023, 2027. | File no. NS-142.

Box 3 Folder 95
Shipboard anti-submarine attack teacher (SASAT B). Prepared by Firth Pierce and Jay Schisel, 1944 February 25

UCDWR report no. U186. | Office of Scientific Research and Development. | National Defense Research Committee, 6.1-sr30-1402. | File no. 91.235 (NS-152).

Box 3 Folder 96
Pressure-proof speaker. Prepared by W. A. Myers, 1944 February 26

Memorandum for file. | UCDWR report no. M185. | File no. 93.00.

Box 3 Folder 97
West coast sound school training program for the tactical sound range recorder teacher (Navy QFL). Prepared by W. L. Jenkins, 1944 March

UCDWR report no. U190.

Box 3 Folder 98
UCDWR pitch-memory selection test: A report on design standards. Prepared by Adelbert Ford, 1944 March

UCDWR report no. U196. | Office of Scientific Research and Development. | National Defense Research Committee, 6.1-sr30-1413. | File no. 91.10

Box 3 Folder 99
Revised selection procedure for sonar operations: A report on validating research. Prepared by Adelbert Ford, S. W. Osgood, W. J. Giese, W. R. Thurlow and L. J. Cronbach, 1944 March

UCDWR report no. U197. | Office of Scientific Research and Development. | National Defense Research Committee, 6.1-sr30-1414. | File no. 91.10

Box 3 Folder 100
D-series of Doppler drills and tests: A report on the psychological standards of auditory discrimination. Prepared by Adelbert Ford, 1944 March

UCDWR report no. U206. | Office of Scientific Research and Development. | National Defense Research Committee, 6.1-sr30-1505. | File no. 91.10

Box 4 Folder 1
Data at 45 KC on echoes from a diving submarine and its wake. Prepared by Sonar Section, 1944 March 3

Memorandum for file. | UCDWR report no. M172a. | File no. 01.50.

Box 4 Folder 2
Sound transmission through destroyer wakes. Prepared by Listening Section, 1944 March 8

Memorandum for file. | UCDWR report no. M189. | File no. 01.50 (NS-141).

Box 4 Folder 3
Some experiments on the transmission of continuous sound in 100-fathom to 600-fathom water: A series of tests made in cooperation with UCDWR and MIT (DIC 6187) - 31 August-10 September 1943

UCDWR report no. M193. | Office of Scientific Research and Development. | File no. 01.73 (NS-140).

Box 4 Folder 4
Preliminary report on the use of FM sonar in harbor net protection. Prepared by Sonar Group, 1944 April 14

Memorandum for file. | UCDWR report no. SM201. | File no. 02.13.

Box 4 Folder 5
Leading cut-ons on attack teachers and at sea. Prepared by W. L. Jenkins, 1944 April 20

Memorandum for file. | UCDWR report no. M204. | File no. 91.60.

Box 4 Folder 6
Preliminary report on the sonic ray plotter. Prepared by L. I. Schiff, 1944 April 21

Memorandum for file. | UCDWR report no. M207. | File no. 01.92 (NS-140).

Box 4 Folder 7
Some underwater sound measurements on two aircraft carriers. Prepared by Listening Section, 1944 April 27

Internal Report No. A1. | File no. 01.31.

Box 4 Folder 8
Oscillograms of 24 KC noise produced by a destroyer. Prepared by George Duvall and the Sonar Section, 1944 May 1

Internal Report No. A2. | File no. 01.50.

Box 4 Folder 9
Shipboard anti-submarine sonar trainer (SASAT 1, model V). Prepared by Edward J. Smuckler, 1044 May 5

UCDWR report no. U211. | Office of Scientific Research and Development. | National Defense Research Committee, 6.1-sr30-1511. | File no. 91.234 (NS-152).

Box 4 Folder 10
Target strength of a submarine at 24 KC. Prepared by George Duvall and the Echo-Ranging Section, 1944 May 10

Internal Report No. A4. | File no. 01.80.

Box 4 Folder 11
Depression for a special magnetostriction echo-repeater. Prepared by D. G. Reed, 1944 May 10

Memorandum for file. | UCDWR report no. M216. | File no. 91.236 (NS-144).

Box 4 Folder 12
Further underwater sound measurements on aircraft carriers. Prepared by Listening Section, 1944 May 12

Internal Report No. A3. | File no. 01.31.

Box 4 Folder 13
Recommendations for monitoring and measuring sonic output of submarines. Prepared by L. W. Sepmeyer, R. S. Gale and the Listening Section, 1944 May 13

Internal Report No. A13. | File no. 01.35.

Box 4 Folder 14
Underwater sound measurements on aircraft carriers. Prepared by Listening Section, 1944 May 15

Memorandum for file. | UCDWR report no. M212. | File no. 01.31 (NO-163).

Box 4 Folder 15
Scattering of sound by the surface of the sea. Prepared by L. I. Schiff, 1944 May 15

Memorandum for file. | UCDWR report no. M217. | File no. 01.72, 01.73 (NS-140).

Box 4 Folder 16
Bottom reverberation. Prepared by T. H. Schafer and the Echo-Ranging Section, 1944 May 16

Internal Report No. A5. | File no. 01.40.

Box 4 Folder 17
Transmission of 60 KC sound data of March and April 1944. Prepared by M. J. Sheehy and the Echo-Ranging Section, 1944 May 17

Internal Report No. A6. | File no. 01.72.

Box 4 Folder 18
Bottom reverberation at 24 KC - E. W. Scripps data. Prepared by R. R. Carhart and the Oceanographic Section, 1944 May 18

Internal Report No. A7. | File no. 01.60, x01.40.

Box 4 Folder 19
NAC beacon tests. Prepared by David J. Evans and Vaughn G. McKenney, 1944 May 19

Memorandum for file. | UCDWR report no. SM215. | File no. 09.412.

Box 4 Folder 20
Reflection coefficients of surface and bottom. Prepared by R. W. Raitt and the Echo-Ranging Section, 1944 May 22

Internal Report No. A8. | File no. 01.40.

Box 4 Folder 21
Range limitation in shallow water as controlled by bottom character, state of sea, and thermal structure. Prepared by Francis P. Shepard and the Oceanographic and Echo-Ranging Sections, 1944 May 22

Internal Report No. A10. | File no. 01.60, x01.40.

Box 4 Folder 22
Some considerations pertaining to systematic masking of ship sounds. Prepared by R. S. Gales and the Listening Section, 1944 May 23

Internal Report No. A11. | File no. 01.35.

Box 4 Folder 23
Bearing deviation indicator trainer. Prepared by Clark F. Bradley, 1944 May 23

UCDWR report no. U218. | Office of Scientific Research and Development. | National Defense Research Committee, 6.1-sr30-1517. | File no. 91.217.

Box 4 Folder 24
Comparison of the measuring systems at 24 KC of the listening section and the echo-ranging section. Prepared by G. P. Welch, Listening Section, M. J. Sheehy and the Echo-Ranging Section, 1944 May 29

Internal Report No. A12. | File no. 01.72, x01.73.

Box 4 Folder 25
Selection research on sonar officers - Technical report on validation studies. Prepared by Adelbert Ford, S. W. Osgood, W. J. Giese, W. R. Thurlow and L. J. Cronbach, 1944 June

UCDWR report no. M235. | Office of Scientific Research and Development. | File no. 91.12 (NS-97).

Box 4 Folder 26
Workbook for prediction maximum echo ranges to be used with prediction of sound ranges from bathythermograph observations (NavShips 943-C2). Prepared by Oceanographic Section and the Training Group, 1944 June 1

Preliminary edition. | UCDWR report no. R230. | Office of Scientific Research and Development. Contract OEMsr30.

Box 4 Folder 27
Underwater sound measurements on aircraft carriers. Prepared by T. McMillian, H. J. Oorthuys and the Listening Section, 1944 June 2

Internal Report No. A14. | File no. 01.31.

Box 4 Folder 28
Attenuation of sound in the sea. Prepared by Carl Eckart, 1944 July 6

UCDWR report no. U236. | Office of Scientific Research and Development. | National Defense Research Committee, 6.1-sr30-1532. | File no. 01.70 (NS-140).

Box 4 Folder 29
Transmission of the 24 KC component of a shock excited diaphragm. Prepared by M. J. Sheehy and the Echo-Ranging Section, 1944 June 9

Internal Report No. A15. | File no. 01.72.

Box 4 Folder 30
Some evidence for specular bottom reflection of 24 KC sound. Prepared by R. R. Carhart and the Oceanographic Section, 1944 June 9

Internal Report No. A17. | File no. 01.60, x01.40.

Box 4 Folder 31
Self-noise of PC boats. Prepared by T. F. Johnston and the Listening Section, 1944 June 10

Internal Report No. A16. | File no. 01.332.

Box 4 Folder 32
Modifications and tests made on Taylor model basin self-propelled practice target. Prepared by D. J. Evan, 1944 June 14

Memorandum for file. | UCDWR report no. M225. | File no. 91.236 (NS-144).

Box 4 Folder 33
Secure echo sounding equipment. Prepared by David H. Ransom, 1944 June 14

Memorandum for file. | UCDWR report no. SM231. | File no. 09.21 (NS-221).

Box 4 Folder 34
Bottom reverberation in very shallow water. applications to small object detection. Prepared by R. W. Raitt and the Echo-Ranging Section, 1944 June 15

Internal Report No. A18. | File no. 01.40.

Box 4 Folder 35
Validation of "Inventory of musical background, form B". Prepared by W. J. Giese, 1944 June 19

Memorandum for file. | UCDWR report no. M227. | File no. 91.11 (NS-97).

Box 4 Folder 36
Some sound propagation measurements in the fourteenth naval district. Prepared by Listening and Oceanographic Sections, 1944 June 19

Memorandum for file. | UCDWR report no. M228. | File no. 03.30 (NS-140).

Box 4 Folder 37
British ASDIC type 135 tests. Prepared by Melvin E. Chun, 1944 June 19

Memorandum for file. | UCDWR report no. SM221. | File no. 02.13.

Box 4 Folder 38
Sound output of six-inch NAD. Prepared by T. M. McMillian and the Listening Section, 1944 June 21

Internal Report No. A20. | File no. 09.40.

Box 4 Folder 39-40
Bi-weekly report covering period June 25-December 23, 1944

UCDWR report no. U238, U241, U248, U253, U255, U260, U262, U264, U271, U274, U278, U281, U285. | Office of Scientific Research and Development. | National Defense Research Committee, 6.1-sr30-1537, 1539, 1745, 1750, 1861-1862, 1865, 1871, 1874, 1878, 2011, 2014.

Box 4 Folder 41
Masking experiments - Report no. 1. Prepared by Listening Section, 1944 June 28

UCDWR report no. U229. | Office of Scientific Research and Development. | National Defense Research Committee, 6.1-sr30-1751. | File no. 01.35 (NO-163, NS-164).

Box 4 Folder 42
Spectral analyses of three and ten-inch NAD. Prepared by Listening Section, 1944 June 30

Internal Report No. A22. | File no. 09.40.

Box 4 Folder 43
NAC beacon tests in 14th naval district. Prepared by Vaughn G. McKenney and W. Bruce Beckley, 1944 June 30

Memorandum for file. | UCDWR report no. SM240. | File no. 09.412 (NS-164).

Box 4 Folder 44
Spectral analyses of magnetostriction- and bridge-type speakers. Prepared by T. McMillian and the Listening Section, 1944 July 12

Internal Report No. A25. | File no. 09.40.

Box 4 Folder 45
Chemical recorder traces of submarine wakes at 20 KC. Prepared by George Duvall and the Echo-Ranging Section, 1944 July 18

Internal Report No. A23. | File no. 01.50.

Box 4 Folder 46
Masking effect of water noise on short pulses. Prepared by Raymond C. Fisher, 1944 July 25

UCDWR report no. S239. | Office of Scientific Research and Development. | National Defense Research Committee, 6.1-sr30-1538. | File no. 09.21 (NS-221).

Box 4 Folder 47
Comparison of calculated and observed intensities for some split beam sound field runs. Prepared by R. R. Carhart, L. A. Thacker and the Oceanographic Section, 1944 August 2

Internal Report No. A26. | File no. 01.92, x01.72.

Box 4 Folder 48
Relative movement test in sonar officer selection. Prepared by Selection and Training Group, 1944 August 5

Memorandum for file. | UCDWR report no. M245. | File no. 91.11 (NS97).

Box 4 Folder 49
Sonic ray plotter. Prepared by Leonard I. Schiff, 1944 August 8

UCDWR report no. U246. | Office of Scientific Research and Development. | National Defense Research Committee, 6.1-sr30-1741. | File no. 01.92 (NS-140).

Box 4 Folder 50
Frequency characteristics of echoes and reverberation. Prepared by W. M. Rayton and R. C. Fisher, 1944 August 9

UCDWR report no. U244. | Office of Scientific Research and Development. | National Defense Research Committee, 6.1-sr30-1740. | File no. 01.41 (NS-140).

Box 4 Folder 51
NAC beacon. Prepared by Vaughn G. McKenney, Benjamin F. Howell, Walter G. Bryant and W. Bruce Beckley, 1944 August 15

UCDWR report no. S243. | Office of Scientific Research and Development. | National Defense Research Committee, 6.1-sr30-1746. | File no. 09.412 (NS-164).

Box 4 Folder 52
Amplitude fluctuations of transmitted and reflected sound signals in the ocean. Prepared by M. J. Sheehy and the Echo-Ranging Section, 1944 August 17

Internal Report No. A29. | File no. 01.72.

Box 4 Folder 53
Bottom reverberation in very shallow water. Prepared by Echo-Ranging Section, 1944 August 18

UCDWR report no. SM249. | Office of Scientific Research and Development. | File no. 02.13 (NS-140, NS-297).

Box 4 Folder 54
Seat tests of overhearing of the secure echo sounding equipment (SESE) model 2 aboard the submarine SS411 (Spadefish). Prepared by D. H. Ransom and R. C. Fisher, 1944 August 22

Memorandum for file. | UCDWR report no. SM251. | File no. 09.21 (NS-221).

Box 4 Folder 55
Observed ranges on a submarine at 90 feet keel depth, reported by the U.S.S. Rathburne. Prepared by R. R. Carhart and the Oceanographic Section, 1944 August 24

Internal Report No. A30. | File no. 01.92.

Box 4 Folder 56
Transmission of 24 KC and 60 KC sound in very shallow water. Prepared by M. J. Sheehy and the Echo-Ranging Section, 1944 August 26

Internal Report No. A31. | File no. 01.72.

Box 4 Folder 57
24 KC echoes from a 3-foot sphere. Prepared by George Duvall and the Echo-Ranging Section, 1944 August 26

Internal Report No. A32. | File no. 01.80.

Box 4 Folder 58
Submarine echo ranges observed and predicted - Mike pattern, below layer. Prepared by Carl Eckart, 1944 August 29

Internal Report No. A33. | File no. 01.92.

Box 4 Folder 59
Wake of a fleet-type submarine. Prepared by W. M. Rayton, George Duvall and the Echo-Ranging Section, 1944 September 5

Internal Report No. A34. | File no. 01.50, x01.80.

Box 4 Folder 60
Layer effect. Prepared by R. W. Raitt, M. J. Sheehy and the Echo-Ranging Section, 1944 September 9

Internal report no. A35. Includes comments on report by Carl Eckart. | File no. 01.72.

Box 4 Folder 61
Midget bearing demonstrator. Prepared by Karl H. Sommermeyer, 1944 September 14

Memorandum for file. | UCDWR report no. M256. | File no. 91.214 (NS-97).

Box 4 Folder 62
Secure echo sounding equipment. Prepared by David H. Ransom, 1944 September 15

UCDWR report no. S257. | Office of Scientific Research and Development. | National Defense Research Committee, 6.1-sr30-1756. | File no. 09.21 (NS-221).

Box 4 Folder 63
Masking experiments - Report no. II. Prepared by Listening Section, 1944 September 15

UCDWR report no. U258. | Office of Scientific Research and Development. | National Defense Research Committee, 6.1-sr30-1757. | File no. 01.35 (NS-163, NS-164).

Box 4 Folder 64
Coherence and fluctuation of FM reverberation. Prepared by M. J. Sheehy and the Echo-Ranging Section, 1944 September 19

Internal Report No. A37. | File no. 01.41.

Box 4 Folder 65
Detectability of repeated pulses. Prepared by Raymond C. Fisher and Carl Eckart, 1944 September 27

Memorandum for file. | UCDWR report no. M261. | File no. 09.22 (NS-221).

Box 4 Folder 66
Transmission of underwater sound over a sloping bottom. Prepared by R. R. Carhart and K. O. Emery, 1944 October 1

Internal Report No. A39. | File no. 01.70.

Box 4 Folder 67
Variability of deep water transmission. Prepared by M. J. Sheehy and the Echo-Ranging Section, 1944 October 5

Internal report no. A40. Includes comments on report by Richard H. Fleming. | File no. 01.72.

Box 4 Folder 68
Self-noise of the S23. Prepared by T. F. Johnston and the Listening Section, 1944 October 5

Internal Report No. A41. | File no. 01.332.

Box 4 Folder 69
Further experiments on the transmission of continuous sound. Prepared by R. E. Chamber and the Listening Section, 1944 October 13

Internal Report No. A42. | File no. 01.73.

Box 4 Folder 70
Transmission of 24 KC and 60 KC sound in very shallow water. Prepared by M. J. Sheehy and the Echo-Ranging Section, 1944 October 23

Internal Report No. A31a. | File no. 01.72.

Box 4 Folder 71
Directional control devices. Prepared by L. N. Schwien Engineering Company, 1944 October 24

UCDWR report no. U266. | Office of Scientific Research and Development. | National Defense Research Committee, 6.1-sr30-1868. | File no. 09.45 (NS-293).

Box 4 Folder 72
Echoes from swells. Prepared by George E. Duvall and the Echo-Ranging Section, 1944 October 27

Internal Report No. A43. | File no. 01.80.

Box 4 Folder 73
Consulting services under Navy project NS-195, 1944 October 27

Office of Scientific Research and Development. | National Defense Research Committee, 6.1-sr30-1870. | File no. 91.236 (NS-195).

Box 4 Folder 74
Correlation of simultaneous transmission in deep water at different frequencies. Prepared by M. J. Sheehy and the Echo-Ranging Section, 1944 October 28

Internal Report No. A44. | File no. 01.72.

Box 4 Folder 75
Submarine barometer simulator. Prepared by Training Group, 1944 October 28

UCDWR report no. M270. | Office of Scientific Research and Development. | National Defense Research Committee, 6.1-sr30-1853. | File no. 91.249.

Box 4 Folder 76
Underwater sound output of cruiser, destroyer, and aircraft carrier - A series of measurements made in cooperation with MIT (DIC-6187) during August 1944. Prepared by Listening Section, 1944 October 28

UCDWR report no. SM268. | Office of Scientific Research and Development. | File no. 01.31 (NO-163).

Box 4 Folder 77
FM sonar model 1, nos. 6-10 - Operation and maintenance, 1944 November 1

UCDWR report no. R223.2. | File no. 02.454 (NS-142).

Box 4 Folder 78
Sound-ranging conditions off southern California. Prepared by K. O. Emery and the Oceanographic Section, 1944 November 1

Internal report no. A45. Includes comments on report by R. W. Raitt. | File no. 01.90.

Box 4 Folder 79
Sound measuring equipment on the YAG-6 (Ex-enchantress). Prepared by T. McMillian and the Listening Section, 1944 November 8

Internal Report No. A47. | File no. 01.73.

Box 4 Folder 80
DR1 practice target for rocket practice, 1944 November 9

Memorandum for file. | UCDWR report no. M273. | File no. 91.236.

Box 4 Folder 81
Observations made during ten days at sea with FM sonar on the U.S.S. Tinosa (SS283). Prepared by Melvin O. Kappler, 1944 November 11

Memorandum for file. | UCDWR report no. SM280. | File no. 02.454 (NS-142).

Box 4 Folder 82
Bi-weekly report covering period November 12-25, 1944

UCDWR report no. U278. | Office of Scientific Research and Development. | National Defense Research Committee, 6.1-sr30-1878.

Box 4 Folder 83
Calibration of underwater sound level meter and analyzer. Prepared by H. J. Oorthuys and the Listening Section, 1944 November 15

Internal Report No. A48. | File no. 01.31.

Box 4 Folder 84
Bi-weekly report cover period October 29-November 11, 1944

UCDWR report no. U274. | Office of Scientific Research and Development. | National Defense Research Committee, 6.1-sr30-1874.

Box 4 Folder 85
Submarine sounds recorded for Mare Island navy yard - Abstract. Prepared by Listening Section, 1944 November 18

Memorandum for file. | UCDWR report no. M277. | File no. 01.31.

Box 4 Folder 86
Multi-string light valve (An alternative form of analyzer for FM sonar). Prepared by Electrical Research Products Division of the Western Electric Company, Inc., 1944 November 25

UCDWR report no. U276. | Office of Scientific Research and Development. | National Defense Research Committee, 6.1-sr30-1858. | File no. 02.454.

Box 4 Folder 87
Afternoon effect, its application to sound-ranging charts. Prepared by E. C. LaFond and the Oceanographic Section, 1944 November 25

Internal Report No. A49. | File no. 01.91, x01.92.

Box 4 Folder 88-89
Bi-weekly report covering period November 26, 1944-February 3, 1945

UCDWR report no. U281, U287, U292, U297. | Office of Scientific Research and Development. | National Defense Research Committee, 6.1-sr30-2011, 2017, 2021, 2025.

Box 4 Folder 90
Interference effect between echo and reverberation. Prepared by A. M. Small and the Listening Section, 1944 December 16

Internal Report No. A50. | File no. 01.40, x01.40.

Box 4 Folder 91
Sound cavitation tests on U.S.S. Springer (SS414). Prepared by Listening Section, 1944 December 20

Memorandum for file. | UCDWR report no. M283. | File no. 01.31.

Box 4 Folder 92
Layer effect at 24 KC and 60 KC. Prepared by M. J. Sheehy and the Echo-Ranging Section, 1944 December 27

Internal Report No. A51. | File no. 01.72.

Box 4 Folder 93
Ambient water noise in the Central and Southwest Pacific. Prepared by M. W. Johnson and T. F. Johnston, 1944 December 28

Based on Observations made by W.E. Loomis. | UCDWR report no. M284. | Office of Scientific Research and Development. | File no. 01.331 (NO-163).

Box 4 Folder 94
Short range spatial pattern measurements on the JK-SK4926 transducer at 24 KC. Prepared by N. Most and the Echo-Ranging Section, 1945 January 5

Internal Report No. A52. | File no. 01.72.

Box 4 Folder 95-98
Sonar data: Monthly progress report - Series I, 1945 February-1946 February

UCDWR report no. MR-304-I, MR-315-I, MR-316-I, MR-323-I, MR-334-I, MR-345-I; MR-354-I; MR-365-I, MR-372-I, MR-383-I, MR-390-I, MR-402-I, MR-415-I. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30).

Box 5 Folder 1-3
Sonar devices: Monthly progress report - Series II, 1945 February-1946 February

UCDWR report no. MR-304-II; MR-315-II; MR-323-II; MR-334-II; MR-345-II, MR-354-II; MR-365-II, MR-372-II; MR-383-II; MR-390-II; MR-402-II; MR-415-II. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30).

Box 5 Folder 4-8
Training aids: Monthly progress report - Series IV, 1945 February-1946 February

UCDWR report no. MR-304-IV; MR-315-IV, MR-316-IV; MR-323-IV, MR-334-IV; MR-345-IV, MR-354-IV; MR-365-IV, MR-372-IV; MR-383-IV; MR-390-IV; MR-402-IV; MR-415-IV. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30).

Box 5 Folder 9
Bi-weekly report covering period January 21-February 3, 1945

UCDWR report no. U297. | Office of Scientific Research and Development. | National Defense Research Committee, 6.1-sr30-2025.

Box 5 Folder 10
Operational procedure and equipment used in sonar sound field studies. Prepared by Echo-Ranging Section, 1945 February 15

UCDWR report no. U295. | Office of Scientific Research and Development. | National Defense Research Committee, 6.1-sr30-2024. | File no. 01.72 (NS-140).

Box 5 Folder 11
Surface reflected submarine echoes. Prepared by G. E. Duvall and the Echo-Ranging Section, 1945 February 24

Internal Report No. A54. | UCDWR report no. A54. | File no. 01.80.

Box 5 Folder 12
Procedures proposed for the treatment of sound transmission data at 200, 600, and 1800 CPS. Prepared by R. W. Young and the Listening Section, 1945 February 24

Internal Report No. A56. | UCDWR report no. A56. | File no. 01.73.

Box 5 Folder 13
Record catalog: Underwater sound recordings on file in the recording laboratory, 1945 March

UCDWR report no. R174.1.

Box 5 Folder 14
Underwater sound output U.S.S. Spot (SS413). Prepared by Listening Section, 1945 March 1

UCDWR report no. M296. | File no. 01.31.

Box 5 Folder 15
Echoes of very short pings from submarines. Prepared by W. M. Rayton, 1945 March 1

UCDWR report no. M301. | File no. 01.80.

Box 5 Folder 16
Echo injector. Prepared by Sommermeyer, Karl, 1945 March 1

UCDWR report no. U302. | File no. 91.215 (NS-97).

Box 5 Folder 17
Underwater sound output of U.S.S. Tinosa (SS283). Prepared by Listening Section, 1945 March 5

UCDWR report no. M303. | File no. 01.31.

Box 5 Folder 18
Surface reflected submarine echoes. Prepared by Echo-Ranging Section, 1945 March 15

UCDWR report no. M306. | File no. 01.80.

Box 5 Folder 19
The influence of thermal conditions on the transmission of 24 KC sound. Prepared by Sonar Data Division, 1945 March 16

UCDWR report no. U307. | File no. 01.72, problem 2A.

Box 5 Folder 20
Internal waves. Prepared by C. W. Ufford, 1945 March 19

UCDWR report no. M289. | File no. 01.95.

Box 5 Folder 21
Internal waves off San Diego, California. Prepared by C. W. Ufford, 1945 March 19

UCDWR report no. M290. | File no. 01.95.

Box 5 Folder 22
The Thermal microstructure of the ocean. Prepared by C. W. Ufford,, 1945 March 19

UCDWR report no. M294. | File no. 01.95.

Box 5 Folder 23
Tests on water activated battery, Burgess type 4-CC-167 samples #1 and #2. Prepared by W. L. Bryant, 1945 April 9

UCDWR report no. M309. | File no. 09.412.

Box 5 Folder 24
Talk-through equipment for submarine sonar training. Prepared by Carlton Beyer, 1945 April 12

UCDWR report no. M308. | File no. 91.14.

Box 5 Folder 25
Submarine listening cues for target angle. Prepared by Adelbert Ford, 1945 April 24

UCDWR report no. M311. | File no. 91.14.

Box 5 Folder 26
Comparison of echo recognition at 800 and 500 cycles. Prepared by A. Ford and L. J. Cronbach, 1945 April 30

UCDWR report no. M312. | File no. 91.14.

Box 5 Folder 27
A Comparison of transmission loss at 16 KC and 24 KC. Prepared by Sonar Data Division, 1945 May 5

UCDWR report no. M313. | File no. 01.72.

Box 5 Folder 28
Learning studies on the sound recognition group trainer: Single ping range reading. Prepared by L. J. Cronbach, 1945 May 18

UCDWR report no. M319. | File no. 91.14.

Box 5 Folder 29
Point Loma ship-sound monitoring station. Prepared by Listening Section, 1945 May 25

UCDWR report no. M321. | File no. 01.31.

Box 5 Folder 30
The Automatic target positioner for DRT. Prepared by Firth Pierce, 1945 June 1

UCDWR report no. M322. | File no. 85.00.

Box 5 Folder 31
Experimental study of masking by a line spectrum. Prepared by Sonar Data Division, 1945 June 7

UCDWR report no. M314. | File no. 01.35, problem 2M2.

Box 5 Folder 32
Preliminary charts with histograms for the fourth edition of the sound ranging (sonar) charts June 1-August 31, 1945. Prepared by UCDWR and Woods Hole Oceanographic Institution

UCDWR report no. M326. | File no. 01.92, problem 2H.

Box 5 Folder 33
Sonar hut noise measurements on a frigate. Prepared by Psycho-Physical Group and the Listening Section, 1945 June 11

UCDWR report no. M324. | File no. 01.41, problem 2F.

Box 5 Folder 34
Isolation of additive effects. Prepared by Sonar Data Division, 1945 June 13

UCDWR report no. M327. | File no. 01.72, problem 2A.

Box 5 Folder 35
Basic material for inclusion in "Use of submarine bathythermograph observation: Part 7, problems" (NavShips 900, 069). Prepared by Publications Group, 1945 June 15

UCDWR report no. M328. | File no. 91.80, problem 5D.

Box 5 Folder 36
Low frequency underwater sound source, type MEF. Prepared by Listening Section, 1945 June 22

UCDWR report no. M331. | File no. 01.73, problem 2A.

Box 5 Folder 37
Operation's with fleet type submarines. Prepared by Rushmore Shope, 1945 June 23

UCDWR report no. M333. | File no. 91.70, problem 5E.

Box 5 Folder 38
Processing sound field data. Prepared by Sonar Data Division, 1945 July 7

UCDWR report no. M336. | File no. 01.72, problem 2A.

Box 5 Folder 39
Proposed content of a manual explaining the factors governing sound ranges. Prepared by Publications Group, 1945 July 9

UCDWR report no. M335. | File no. 91.80, problem 5D.

Box 5 Folder 40
Echo recognition group training as developed for use with the echo recognition monitor recorder model 2, 1945 July 10

UCDWR report no. U325. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 91.216, problem 5H.

Box 5 Folder 41
Learning studies on the sound recognition group trainer: Turn counting. Prepared by L. J. Cronbach and Dale Lovell, 1945 July 14

UCDWR report no. M338. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 91.246, problem 5E.

Box 5 Folder 42
Preliminary report on small object detector (SOD). Prepared by M. E. Chun and C. F. Mongan, 1945 July 17

UCDWR report no. M343. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 02.131, problem 4A.

Box 5 Folder 43
A New method for measuring the acoustical constants of sediment samples. Prepared by Sonar Data Division, 1945 July 21

UCDWR report no. M340. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 01.60, problem 2A.

Box 5 Folder 44
XQHA sonar tests. Prepared by William H. Williams, 1945 July 30

UCDWR report no. M339. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 02.132, problem 4B.

Box 5 Folder 45
Doppler judgement at low beat-frequency oscillator settings. Prepared by A. Ford, L. J. Cronbach and D. F. Lovell, 1945 August 10

UCDWR report no. M347. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 01.41, problem 5E.

Box 5 Folder 46
List of publications, 1945 August 15

UCDWR report no. M348.

Box 5 Folder 47
Internal waves measured at three stations. Prepared by C. W. Ufford, 1945 August 15

UCDWR report no. M350. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 01.95, problem 2A.

Box 5 Folder 48
Investigation of OAS practice targets for use at 300 foot depths. Prepared by W. L. Bryant, 1945 August 25

UCDWR report no. M349. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 91.236.1, problem 5C.

Box 5 Folder 49
Learning studies on the sound recognition group trainer: Classification of supersonic targets. Prepared by L. J. Cronback and Dale Lovell, 1945 August 25

UCDWR report no. M351. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 91.14, problem 5E.

Box 5 Folder 50
Learning studies on the sound recognition group trainer: Bow stern identification. Prepared by L. J. Cronbach and Dale Lovell, 1945 August 25

UCDWR report no. M352. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 91.14, problem 5E.

Box 5 Folder 51
Proposed design features for the new NAD-8 beacon. Prepared by Raymond D. Atchley, 1995 August 27

UCDWR report no. SM355. | File no. 09.454, problem 1B.

Box 5 Folder 52
Air-borne noise measurements on the AGC-5. Prepared by Listening Section, 1945 August 28

UCDWR report no. M356. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 01.31, problem 2G.

Box 5 Folder 53
The Bathythermograph simulator. Prepared by The Training Aids, 1945 September 13

UCDWR report no. U360. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 91.248.

Box 5 Folder 54
Afternoon effect and its application to sound-ranging charts, 1945 September 15

UCDWR report no. U357. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 01.93, problem 2A.

Box 5 Folder 55
Learning studies on the sound recognition group trainer: Target classification. Prepared by L. J. Cronback and Dale Lovell, 1945 September 17

UCDWR report no. M359. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 91.14, problem 5E.

Box 5 Folder 56
Non-obscurable focusing DRT light. Prepared by Training Aids Division, 1945 September 19

UCDWR report no. M358. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 91.20, problem 5E.

Box 5 Folder 57
The Automatic target positioner for the dead reckoning tracer model I, 1945 September 20

UCDWR report no. U353. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 85.00, problem 6A.

Box 5 Folder 58
Limitation of echo ranges by reverberation (Deep water). Prepared by Sonar Data Division, 1945 September 20

UCDWR report no. M361. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 01.90, problem 2A.

Box 5 Folder 59
Submarine bathythermograph classroom demonstration, 1945 September 20

UCDWR report no. M363. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 91.248.1, problem 5E

Box 5 Folder 60
Interim report: Transmission of underwater sound at lower frequencies, 1945 November 1

UCDWR report no. U362. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 01.73, problem 2A.

Box 5 Folder 61
Tests and learning studies on JP and WCA submarine sonar trainers. Prepared by Carlton Beyer and Dale F. Lovell, 1945 November 5

UCDWR report no. M366. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 91.14, problem 5E.

Box 5 Folder 62
Reminders on style, 1945 November 6

UCDWR report no. M374. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 91.80.

Box 5 Folder 63
Transmission of 24 KC sound in shallow water. Prepared by Sonar Data Division, 1945 November 20

UCDWR report no. M368. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 01.72, problem 2A.

Box 5 Folder 64
The Transmission of sound at 56 KC. Prepared by Sonar Data Division, 1945 November 28

UCDWR report no. M378. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 01.72, problem 2A.

Box 5 Folder 65
Method of reading sound field records: Appendix I to UCDWR report M336, processing sound field data. Prepared by Sonar Data Division, 1945 November 29

UCDWR report no. M336.1. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 01.72.

Box 5 Folder 66
The additive effects of wind force, thermal gradient, and particle size on the transmission of 24 kc sound over sand bottoms in shallow water. Prepared by Sonar Data Division, 1945 December 1

UCDWR report no. M375. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 01.72.

Box 5 Folder 67
Additive analysis with disproportionate weighting. Prepared by Sonar Data Division, 1945 December 5

UCDWR report no. M379. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 01.72.

Box 5 Folder 68
Production of sonar maintenance manuals, 1945 December 5

UCDWR report no. U370. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 91.413, problem 5M1.

Box 5 Folder 69
The Sound recognition group trainer: A study of the tests used, 1945 December 10

UCDWR report no. N371. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 91.246, problem 5H.

Box 5 Folder 70
The Range indicator trainer. Prepared by Training Aids Division, 1945 December 11

UCDWR report no. M381. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 91.246.

Box 5 Folder 71
Fluctuation of 24 KC signals at short range as a function of the roll of the sending ship. Prepared by Sonar Data Division, 1945 December 11

UCDWR report no. M386. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 01.72, 01.76.

Box 5 Folder 72
Psychological methods and projects in sonar training. Prepared by Adelbert Ford, 1945 December 12

UCDWR report no. M369. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 91.14, problem 5E.

Box 5 Folder 73
Attenuations and fluctuation studies used on supersonic bottom echoes. Prepared by Sonar Data Division, 1945 December 13

UCDWR report no. M384. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 01.71, 01.76.

Box 5 Folder 74
Status report on self-noise measurements of sonar installations. Prepared by Sonar Data Division, 1945 December 29

UCDWR report no. M385. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 01.332, problem 2.

Box 5 Folder 75
Submarine operating conditions in the western Pacific ocean, 1946 February 1

UCDWR report no. U344. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 01.913, problem 2H.

Box 5 Folder 76
Principles of training in Doppler discrimination, 1946 February 1

UCDWR report no. U367. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 91.14.

Box 5 Folder 77
Selection of sonar officers, operators, and maintenance men, 1946 February 8

UCDWR report no. M377. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 91.14.

Box 5 Folder 78
Overlays useful in the analysis of sound transmission data, 1946 February 10

UCDWR report no. M391. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 01.73, problem 2A.

Box 5 Folder 79
Status report on echoes from small objects. Prepared by Sonar Data Division, 1946 February 14

UCDWR report no. M388. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 01.80.

Box 5 Folder 80
Moored echo-repeater mine. Prepared by Sonar Devices Division, 1946 February 14

UCDWR report no. M393. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 91.236.

Box 5 Folder 81
Coherence and fluctuation of FM reverberation. Prepared by Sonar Data Division, 1946 February 14

UCDWR report no. M395. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 02.41.

Box 5 Folder 82
Stratification of sound scatterers in the ocean. Prepared by Sonar Data Division, 1946 February 16

UCDWR report no. M397. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 01.40.

Box 5 Folder 83
Buoyancy control - General instructions for use. Prepared by R. D. Atchley, 1944 February 22

UCDWR report no. M182. | File no. 09.44.

Box 5 Folder 84
The Stationary echo repeater decoy for submarine use. Prepared by Sonar Devices Division, 1946 February 28

UCDWR report no. SM396. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 09.411.

Box 5 Folder 85
The Fiducial signal generator. Prepared by Sonar Devices Division, 1946 March 12

UCDWR report no. M405. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 09.30.

Box 5 Folder 86
Hand-held echo-ranging devices. Prepared by Sonar Data Division, 1946 March 18

UCDWR report no. M403. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 02.132.

Box 5 Folder 87
Forward scattering from the deep scattering layer. Prepared by Sonar Data Division, 1946 March 19

UCDWR report no. M398. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 01.72.

Box 5 Folder 88
Frequency weighting in ship sound measurements - An audibility meter. Prepared by Sonar Data Division, 1946 March 19

UCDWR report no. M399. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 01.35.

Box 5 Folder 89
The sea surface and its effect on the reflection of sound and light. Prepared by Sonar Data Division, 1946 March 20

UCDWR report no. M407. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 01.75.

Box 5 Folder 90
Second model of the automatic receiver gain changer used in transmission studies. Prepared by Sonar Data Division, 1946 March 23

UCDWR report no. M401. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 01.72.

Box 5 Folder 91
Underwater noise caused by snapping shrimp, 1946 April 1

Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30).

Box 5 Folder 92
The influence of thermal conditions on the transmission of 24 KC sound, 1946 April 1

UCDWR report no. U394. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 01.72, problem 2A.

Box 5 Folder 93
Completion report for UCDWR consultation work on BuShips contract NXSR87757 for NAD-6 sound beacon. Prepared by Sonar Devices Division, 1946 April 6

UCDWR report no. M413. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 09.452.

Box 5 Folder 94
Transmission of 24-KC sound from a deep projector. Prepared by Sonar Data Division, 1946 April 8

UCDWR report no. M409. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 01.73.

Box 6 Folder 1
The Doppler effect in sonar operation, 1946 April 10

UCDWR report no. M382. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 91.14.

Box 6 Folder 2
Processing low-frequency sound transmission data. Prepared by Sonar Data Division, 1946 April 10

UCDWR report no. M414. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 01.73.

Box 6 Folder 3
Completion report for submarine evasive aid navy model NAD-3 sound beacon, 1946 April 10

UCDWR report no. SU-364. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 09.451, problem 1A.

Box 6 Folder 4
Internal waves measured with three thermocouples. Prepared by Sonar Data Division, 1946 April 12

UCDWR report no. M406. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 01.95.

Box 6 Folder 5
Identification of target aspect by submarine listening. Prepared by Sonar Data Division, 1946 April 15

UCDWR report no. M400. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 01.31.

Box 6 Folder 6
QFL range recorder errors, their effect on instruction, and a discussion of methods for minimizing them. Prepared by Training Aids Division, 1946 April 16

UCDWR report no. M416. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 91.50.

Box 6 Folder 7
Directivity pattern of the JK projector at 24 KC as a function of range. Prepared by Sonar Data Division, 1946 April 25

UCDWR report no. M411. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 01.72.

Box 6 Folder 8
Calibration sets, UCDWR types AP & AR. Prepared by Sonar Devices Division, 1946 May 10

UCDWR report no. M420. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 01.73.

Box 6 Folder 9
Pilot's emergency transducer (PET) for NAJ sonar beacon. Prepared by Sonar Devices Division, 1946 May 10

UCDWR report no. SM389. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 09.70.

Box 6 Folder 10
Transmission of 24 KC sound at short ranges. Prepared by Sonar Data Division, 1946 May 20

UCDWR report no. M421. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 01.72.

Box 6 Folder 11
Harmonic analysis of the internal waves and the tide. Prepared by Sonar Data Division, 1946 May 30

UCDWR report no. M427. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 01.95.

Box 6 Folder 12
CXKD and lead-line expendable sounding equipment, 1946 June 1

UCDWR report no. U346. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 02.135, problem 7C.

Box 6 Folder 13
Propagation of 20-KC sound over a submarine canyon. Prepared by Sonar Data Division, 1946 June 7

UCDWR report no. M428. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 01.73.

Box 6 Folder 14
Methods of reverberation measurements and preliminary analysis. Prepared by Sonar Data Division, 1946 June 25

UCDWR report no. M424. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 01.40.

Box 6 Folder 15
A Proposed method for measurement of swell by observation of ship's roll. Prepared by Sonar Data Division, 1946 June 28

UCDWR report no. M392. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 01.95.

Box 6 Folder 16
Completion report on transducer calibration facilities and techniques of UCDWR, 1946 June 30

UCDWR report no. U435 (NS-139). | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 01.10, problem 2MI.

Box 6 Folder 17
Completion report... covering operations of the University of California Division of War Research... from 26 April 1941 to 30 June 1946

Incomplete. Pages 144-319 (Section 5.D.-Appendix B).

Box 6 Folder 18
Correlation of 24 KC signals received simultaneously on two hydrophones, 1946 July 1

UCDWR report no. M429. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 01.72.

Box 6 Folder 19-20
Procedure for handling bathythermograph data. Prepared by Sonar Data Division, 1946 July 1

UCDWR report no. M442. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 01.93.

Box 6 Folder 21
An Electronic bathythermograph. Prepared by Sonar Data Division, 1946 July 10

UCDWR report no. M439. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 01.95.

Box 6 Folder 22
The Influence of thermal conditions on the transmission of 24 KC sound III. Transmission to a deep hydrophone in deep water, 1946 July 15

UCDWR report no. U422. | File no. 01.72, problem 2A.

Box 6 Folder 23
UCDWR activities on NAD sound beacon project at Pearl Harbor, 1946 July 17

UCDWR report no. SM417. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 09.45.

Box 6 Folder 24-25
Bottom studies of selected areas off California and lower California. Prepared by Sonar Data Division, 1946 July 18

UCDWR report no. M433. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 01.60.

Box 6 Folder 26
Dependence of bottom reflection loss on median diameter of bottom sediment particles. Prepared by Sonar Data Division, 1946 July 18

UCDWR report no. M436. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 01.60.

Box 6 Folder 27
Completion report on consulting services for NAC sound beacon BuShips contract NXSR 60065. Prepared by Sonar Devices Division, 1946 July 30

UCDWR report no. M441. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 09.412.

Box 6 Folder 28
An Introduction to the theory of time-series. Prepared by Sonar Data Division, 1946 August 12

UCDWR report no. M408. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 01.00.

Box 6 Folder 29
Thermal structure of Sweetwater Lake. Prepared by Sonar Data Division, 1946 August 12

UCDWR report no. M434. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 01.95.

Box 6 Folder 30
Limitation of echo ranges by reverberation (Deep water) - Supplement, 1946 August 20

UCDWR report no. M361.1. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 01.90.

Box 6 Folder 31
Summary report - Transmission of 24 KC sound in shallow water. Prepared by Sonar Data Division, 1946 August 28

UCDWR report no. M423. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 01.72.

Box 6 Folder 32
Completion report for contour bottom scanner, 1946 September 1

UCDWR report no. U432. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 02.134, problem 3M2.

Box 6 Folder 33
Study of bottom materials. Prepared by Sonar Data Division, 1946 September 12

UCDWR report no. M404. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 01.60.

Box 6 Folder 34
Completion report on consulting services for NAD-IO sound beacons. Prepared by Sonar Devices Division, 1946 September 18

UCDWR report no. M444. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 09.453.

Box 6 Folder 35
Reverberation of 24-KC sound in shallow water. Prepared by Sonar Data Division, 1946 September 19

UCDWR report no. M438. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 01.40.

Box 6 Folder 36
Studies of the recognition of submarine echoes. Prepared by Sonar Data Division, 1946 September 30

UCDWR report no. M431. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 01.41.

Box 6 Folder 37
Regulated power supplies. Prepared by Sonar Devices Division, 1946 September 30

UCDWR report no. M437. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30).

Box 6 Folder 38
Transmission of 56-KC sound in deep water. Prepared by Sonar Data Division, 1946 September 30

UCDWR report no. M440. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 01.72.

Box 6 Folder 39
Model studies of echo formation. Prepared by Sonar Data Division, 1946 September 30

UCDWR report no. M443. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 02.133.

Box 6 Folder 40
Studies of the deep scattering layer. Prepared by Sonar Data Division, 1946 September 30

UCDWR report no. M445. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 01.40.

Box 6 Folder 41
Sea-going equipment for sonic transmission studies. Prepared by Sonar Data Division, 1946 September 30

UCDWR report no. M446. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 01.73.

Box 6 Folder 42
Status report on self-noise measurements of sonar installations II. Prepared by Sonar Data Division, 1946 September 30

UCDWR report no. M447. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 01.332.

Box 6 Folder 43
Underwater sound transmission at sonic frequencies. Prepared by Sonar Data Division, 1946 September 30

UCDWR report no. M448. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 01.73.

Box 6 Folder 44
UDT paddleboard sounding equipment. Prepared by Sonar Devices Division, 1946 September 30

UCDWR report no. M449. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 02.135.

Box 6 Folder 45
Submarine photography off the California coast. Prepared by F. P. Shepard and K. O. Emery, 1946 September 30

UCDWR report no. M454. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 01.60.

Box 6 Folder 46
Completion report for NAD-6 sound beacon, 1946 October

Navy project no. N5293. Task no. 1. | UCDWR report no. U451. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30). | File no. 09.452, problem 1A.

Box 6 Folder 47
Summary report - Sound recording at UCDWR, 1946 October 1

UCDWR report no. U450. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30).

Box 6 Folder 48
Completion report for NAD-10 sound beacon, 1946 October 1

UCDWR report no. U452. | Office of Scientific Research and Development. Contract NObs-2074 (formerly OEMsr-30).

NAVY RADIO AND SOUND LABORATORY REPORTS

Scope and Contents of Series

Series 4) NAVY RADIO AND SOUND LABORATORY REPORTS: Arranged chronologically.

Box 6 Folder 49
Memorandum for file on a time triangulation method for determining the depth of submarines. Prepared by L. P. Delsasso, undated
Box 6 Folder 50
Test of a modified model TAQ transmitter on U.S.S. California. Prepared by R. B. Owens, 1940 December 30

No. 1.

Box 6 Folder 51
Antenna measurements on U.S.S. Bridge. Prepared by R. B. Owens, W. F. Squibb and D. D. Parkhurst, 1941 July 3

No. 2. | BuShips problem B3-12D.

Box 6 Folder 52
Antenna measurements on U.S.S. Kanawha. Prepared by R. B. Owens, W. F. Squibb, R. T. Brackett and D. D. Parkhurst, 1941 September 19

No. 3. | BuShips problem B3-12D.

Box 6 Folder 53
Antenna measurements on U.S.S. Saratoga. Prepared by R. T. Brackett, W. F. Squibb and R. B. Owens, 1941 September 19

No. 5. | BuShips problem B3-12D.

Box 6 Folder 54
Directional characteristics of shipboard transmitting antennas - U.S.S. Saratoga , 1941 October 8

No. 4. | BuShips problems W5-8D and B3-12D.

Box 6 Folder 55
Radio hazard to security of extremely small antenna voltages - Receiving antennas on U.S.S. Concord. Prepared by R. T. Brackett and R. B. Owens, 1942 January 5

No. 6. | BuShips problem R5-46CD.

Box 6 Folder 56
Radio hazard to security of extremely small antenna voltages - Receiving antennas on U.S.S. Hughes and U.S.S. Crosby. Prepared by R. T. Brackett and R. B. Owens, 1942 February 14

No. 7. | BuShips problem R5-46CD.

Box 6 Folder 57
Development of sono impulse recorder - Problem U2-8D. Prepared by W. K. Lyon, N. J. Holter, R. M. Sherwood and D. D. Dresson, 1942 February 20

No. S-1. | BuShips problem U2-8D.

Box 6 Folder 58
Radio hazard to security of extremely small antenna voltages - Receiving antennas on U.S.S. Tippecanoe and U.S.S. Zeilin. Prepared by R. T. Brackett and R. B. Owens, 1942 March 31

No. R-8. | BuShips problem R5-46CD.

Box 6 Folder 59
Instructions for the installation and operation of sono optical recorder - Experimental model, 1942 May 22
Box 6 Folder 60
Radio hazard to security of extremely small antenna voltages - Receiving antennas on U.S.S. Harris. Prepared by R. T. Brackett, L. G. Trolese and R. B. Owens, 1942 May 22

No. R-9. | BuShips problem R5-46CD.

Box 6 Folder 61
Radio hazard to security of extremely small antenna voltages - High frequency receiving antenna on U.S.S. Crosby. Prepared by R. T. Brackett, L. G. Trolese and R. B. Owens, 1942 June 12

No. R-10. | BuShips problem R5-46CD.

Box 6 Folder 62
Directional characteristics of a high frequency receiving antenna on U.S.S. Crosby. Prepared by L. G. Trolese, R. T. Brackett and R. B. Owens, 1942 June 18

No. R-11. | BuShips problems W5-8D and B3-12D.

Box 6 Folder 63
Preliminary instructions - Depth charge direction recorder, 1942 June 30

No. S-2.

Box 6 Folder 64
Characteristics of antennas on U.S.S. San Diego. Prepared by L. G. Trolese, R. T. Brackett and R. B. Owens, 1942 July 11

No. R-12. | BuShips problem B3-12D.

Box 6 Folder 65
Antenna impedance measurements on the U.S.S. Hornet. Prepared by R. T. Brackett and R. B. Owens, 1942 July 23

No. R-13. | BuShips problem B3-12D.

Box 6 Folder 66
Antenna impedance measurements on U.S.S. President Jackson. Prepared by L. G. Trolese, R. T. Brackett and R. B. Owens, 1942 August 12

No. R-14. | BuShips problem B3-12D.

Box 7 Folder 1
Antenna measurements on U.S.S. Long Island. Prepared by L. G. Trolese, R. T. Brackett and R. B. Owens, 1942 August 22

No. R-15. | BuShips problem B3-12D.

Box 7 Folder 2
Antenna measurements on U.S.S. Laffey and U.S.S. Woodworth. Prepared by S. R. Radom, R. T. Brackett and R. B. Owens, 1942 August 29

No. R-16. | BuShips problem B3-12D.

Box 7 Folder 3
Antenna impedance measurements on U.S.S. Wasp. Prepared by R. V. Steppler, R. T. Brackett and R. B. Owens, 1942 September 9

No. R-17. | BuShips problem B3-12D.

Box 7 Folder 4
Radio hazard to security from small antenna voltages - Receiving antennas on U.S.S. San Diego, U.S.S. Laffey and U.S.S. PC 570. Prepared by S. R. Radom, R. T. Brackett and R. B. Owens, 1942 September 11

No. R-18. | BuShips problem R5-46CD.

Box 7 Folder 5
Model TBS antenna field patterns - U.S.S. Crosby, U.S.S. Woodworth and U.S.S. Wahoo. Prepared by C. W. Tirrell, R. T. Brackett and R. B. Owens, 1942 September 16

No. R-19. | BuShips problem W5-8D.

Box 7 Folder 6
Report on proposed herald locations - San Pedro harbor, 1942 September 28

No. S-6.

Box 7 Folder 7
Characteristics of antennas on U.S.S. PC 487, U.S.S. PC 569 and U.S.S. PC 570. Prepared by C. W. Tirrell, R. T. Brackett and R. B. Owens, 1942 October 5

No. R-20. | BuShips problem B3-12D.

Box 7 Folder 8
Apparatus for determining radar blind zones. Prepared by R. V. Keeran, E. F. Kiernan, A. F. Deming and H. E. Reppert, 1942 October 14

No. WP-1. | BuShips problem X59CD.

Box 7 Folder 9
Radar wave propagation. Prepared by Lloyd Anderson, John B. Smyth, F. R. Abbott and Roger Revelle, 1942 November 30

No. WP-2. | BuShips problem X4-49CD.

Box 7 Folder 10
Investigation of surface ship wakes. Prepared by Norman J. Holter and Roger R. Revelle, 1942 December 1

No. S-3. | BuShips problem U2-9C-D.

Box 7 Folder 11
Variation of airplane receiver response with distance and direction from the U.S.S. Long Island. Prepared by S. R. Radom, R. T. Brackett and R. B. Owens, 1942 December 12

No. R-21. | BuShips problem W5-8D.

Box 7 Folder 12
Antenna measurements on submarines of the Albacore class - U.S.S. Wahoo (SS 238), U.S.S. Whale (SS 239), U.S.S. Sunfish (SS 282). Prepared by R. V. Steppler, R. T. Brackett and R. B. Owens, 1942 December 31

No. R-22. | BuShips problem B3-12D.

Box 7 Folder 13
Electric razors as a radio hazard to security. Prepared by R. B. Owens, 1943 January 22

No. R-23. | BuShips problem R5-46CD.

Box 7 Folder 14
Survey of San Francisco harbor to determine the suitability of proposed locations for harbor defense installations. Prepared by C. R. Moe and J. O. Long, 1943 January 23

No. S-4. | BuShips problem U5-4DC.

Box 7 Folder 15
Survey of Puget Sound area - Report on the suitability of possible herald locations, strait of Juan de Fuca and Admiralty Inlet, 1943 February 1

No. S-5. | BuShips problem U5-4CD.

Box 7 Folder 16
Antenna measurements on the U.S.S. Tunny (SS 282). Prepared by R. T. Brackett and R. B. Owens, 1943 February 2

No. R-24. | BuShips problem B3-12D.

Box 7 Folder 17
Radio hazard to security resulting from receiver radiation from submarine antennas - Summary of previous radio hazard data. Prepared by R. B. Owens, 1943 February 3

No. R-25. | BuShips problem R5-46CD.

Box 7 Folder 18
Report on radar wave propagation reflection of radar waves from targets of simple geometric form. Prepared by Lloyd Anderson, John B. Smyth and F. R. Abbott, 1943 February 24

No. WP-3. | BuShips problem X4-49CD.

Box 7 Folder 19
Antenna measurements on destroyers of the Bristol class. Prepared by C. W. Tirrell, R. T. Brackett and R. B. Owens, 1943 February 27

No. R-26. | BuShips problem B3-12D.

Box 7 Folder 20
Radiation field patterns of antennas on U.S.S. Phelps (DD 360). Prepared by R. V. Steppler, R. T. Brackett and R. B. Owens, 1943 March 6

No. R-27. | BuShips problem B3-12D.

Box 7 Folder 21
Radiation field patterns of antennas on U.S.S. Long Island (ACV 1), 1943 March 17

No. R-28. | BuShips problem B3-12D.

Box 7 Folder 22-24
Navy Radio and Sound Laboratory. Sound Division. Bi-weekly reports 1-55, 1943 March 6-1945 June 9

NRSL report no. ND11/NP22/S68 Serial C-RS-657, 675, 700, 729, 747, 758, 776, 802, 820, 833, 854, 872, 890, 901, 923, 938, 950, 968, 988, 1010, 1021, 1033, 1053, 1064, 1085, 1106, 1128, 1139, 1152, 1174, 1188, 1209, 1235, 1252, 1264, 1286, 1293, 1342, 1353, 1406, 1424, 1438, 1453, 1470, 1490, 1504, 1522, 1540, 1548, 1579, 1593, 1611, 1646, 1701, 1765.

Box 7 Folder 25
Recording tide current meter. Prepared by Don D. Dressen, Waldo K. Lyon and Chesney R. Moe, 1943 May 1

No. S-7.

Box 7 Folder 26
Graphical construction of a radar radiation pattern in a stratified atmosphere. Prepared by Lloyd Anderson and F. R. Abbott, 1943 May 1

No. WP-4. | BuShips problem X4-49CD.

Box 7 Folder 27
Directivity in shipboard antennas - Summary of observations to April 1943. Prepared by R. T. Brackett and R. B. Owens, 1943 May 4

No. R-29. | BuShips problem B3-12D.

Box 7 Folder 28
Report on radar wave propagation atmospheric refraction - A qualitative investigation. Prepared by Lloyd Anderson and John B. Smyth, 1943 May 7

No. WP-5. | BuShips problem X4-49CD.

Box 7 Folder 29
Roll and pitch corrector and attack plotter for use with echo ranging equipment. Prepared by Robert M. Sherwood, 1943 May 22

No. S-8. | BuShips problem U11CD.

Box 7 Folder 30
Geometry of surface wakes and experiments on artificial wakes. Prepared by Norman J. Holter, 1943 May 22

No. S-10. | BuShips problem U2-9CD.

Box 7 Folder 31
Antenna installations for fighter-director communication on auxiliary aircraft carriers - Performance and progress toward improvement. Prepared by S. R. Radom and R. B. Owens, 1943 May 27

No. R-30. | BuShips problem W5-8D.

Box 7 Folder 32
Surveys for harbor underwater detection equipment in the fourteenth naval district. Prepared by Jess O. Long, 1943 June 23

No. S-9. | BuShips problem U5-4CD.

Box 7 Folder 33
Simple methods of determining directivity characteristics of shipboard antennas by the use of aircraft. Prepared by S. R. Radom, C. W. Tirrell and R. B. Owens, 1943 July 26

No. R-31. | BuShips problem B3-12D.

Box 7 Folder 34
Antenna measurements on U.S.S. Doherty (DE-14). Prepared by R. V. Steppler, C. W. Tirrell and R. B. Owens, 1943 August 17

No. R-32. | BuShips problem B3-12D.

Box 7 Folder 35
Directivity characteristics of antennas on the submarine chaser U.S.S. SC 1003. Prepared by S. R. Radom, C. W. Tirrell and R. B. Owens, 1943 August 24

No. R-33. | BuShips problem B3-12D.

Box 7 Folder 36
Characteristics of antennas on the submarines U.S.S. Tinosa (SS 283), U.S.S. Tullibee (SS 284), U.S.S. Seahorse (SS 304), and U.S.S. Skate (SS 305). Prepared by C. W. Tirrell and R. B. Owens, 1943 September 15

No. R-34. | BuShips problem B3-12D.

Box 7 Folder 37
Optical sound bearing system. Prepared by Robert M. Sherwood, Robert J. Urick and Waldo K. Lyon, 1943 September 20

No. S-11. | BuShips problem U5-4CD.

Box 7 Folder 38
Magnetic detection loops and acoustic survey Fort Worden, Washington. Prepared by J. O. Long, 1943 September 28

No. S-12. | BuShips problem U5-4CD.

Box 7 Folder 39
Radiation and impedance characteristics of various types of whip antennas and installed on wooden SC boats. Prepared by J. L. Olsen and C. W. Tirrell, 1943 October 18

No. R-35. | BuShips problem B19CD.

Box 7 Folder 40
Sound transmission loss through and thickness of the wakes of anti-submarine vessels. Prepared by N. J. Holter, 1943 November 22

No. S-13. | BuShips problem U2-9DC.

Box 7 Folder 41
Model SB radar equipment - Life and performance tests. Prepared by H. E. Bryan and H. E. Reppert, 1943 November 23

No. X-1. | BuShips problem X160CD.

Box 7 Folder 42
Directivity characteristics of the new antennas on the U.S.S. Nassau (CVE 16). Prepared by S. R. Radom and C. W. Tirrell, 1943 November 25

No. R-36. | BuShips problem B3-12D.

Box 7 Folder 43
Radar ray patterns associated with normal and anomalous, propagation conditions. Prepared by F. P. Dane, R. U. F. Hopkins and L. J. Anderson, 1943 December 10

No. WP-6. | BuShips problem X4-49CD.

Box 7 Folder 44
Measurement of radar wave refraction and associated meteorological conditions. Prepared by L. J. Anderson and L. G. Trolese, 1943 December 10

No. WP-7. | BuShips problem X4-49CD.

Box 7 Folder 45
Rapid reduction of meteorological data to index of refraction at radar frequencies. Prepared by L. J. Anderson and F. R. Abbott, 1943 December 10

No. WP-8. | BuShips problem X4-49CD.

Box 7 Folder 46
Transmission of plane waves through a single stratum separating two media. Prepared by J. B. Smyth and F. R. Abbott, 1943 December 22

No. WP-9. | BuShips problem X4-49CD.

Box 7 Folder 47
Dynamics and vibration of Mark IV 22 MM gun. Reticle image vibration in Mark XIV gun sight. Prepared by Earl F. Kiernan and Waldo K. Lyon, 1944 February 24

No. S-14.

Box 7 Folder 48
Sono optical recorder service tests. Prepared by R. M. Sherwood and W. K. Lyon, 1944 February 27

No. S-15. | BuShips problem U2-8D.

Box 7 Folder 49
Mechanical determination of the path difference of rays subject to discontinuities in the vertical gradient of refractive index. Prepared by F. R. Abbott, 1944 March 10

No. WP-10. | BuShips problem X4-49CD.

Box 7 Folder 50
Instruction memorandum on CW modification for type 896 fathometer U.S.S. Midway (CVE-63), 1944 March 15
Box 7 Folder 51
Antenna directivity patterns and influence of radar training on TBS patterns - U.S.S. Irwin (DD-794). Prepared by R. T. Brackett, 1944 April 8

No. R-37. | BuShips problem B3-12D.

Box 7 Folder 52
Procedure and charts for estimating the low level coverage of shipborne 200 MCS radars under conditions of pronounced refraction. Prepared by F. R. Abbott, L. J. Anderson, F. P. Dane, J. P. Day, R. U. F. Hopkins, J. B. Smyth, L. G. Trolese and Ens. A. P. D. Stokes, 1944 May 10

No. WP-11 (Rev.). | BuShips problem X4-49CD.

Box 7 Folder 53
Employment of a ship's mast as a shunt excited antenna - Some measurements aboard vessels of the frigate type. Prepared by R. T. Brackett, 1944 May 25

No. R-38. | BuShips problem B3-12D.

Box 7 Folder 54
Antenna directivity patterns and influence of radar training on TBS patterns - U.S.S. Orca (AVP-49). Prepared by R. T. Brackett, 1944 May 29

No. R-39. | BuShips problem B3-12D.

Box 7 Folder 55
Calibration and standardization of land based radars by the use of small plane targets. Prepared by F. R. Abbott, 1944 June 10

No. WP-12. | BuShips problem No. X4-49CD.

Box 7 Folder 56
Transmission of plane waves through a single stratum separating two media - Part II. Prepared by J. B. Smyth and F. R. Abbott, 1944 June 23

No. WP-13. | BuShips problem No. X4-49CD.

Box 7 Folder 57
Radar operator's training equipment. Prepared by C. H. Freres, H. E. Bryan, B. G. Ward and R. V. Keeran, 1944 July 7

No. X-2.

Box 7 Folder 58
Antenna directivity patterns on U.S.S. Tang (SS-306) and U.S.S. Spadefish (SS-411) with experimental measurements on whip antenna extension to radarscope antenna system on U.S.S. Spadefish (SS-411). Prepared by R. V. Steppler and R. T. Brackett, 1944 July 19

No. R-40. | BuShips problem No. B3-12D.

Box 7 Folder 59
Rotating hydrophone audio torpedo detector. Prepared by L. L. Morse, 1944 July 19

No. S-16. | BuShips problem No. U13-CD.

Box 7 Folder 60
Measurements of the horizontal thermal structure of the ocean. Prepared by Norman J. Holter, 1944 August 18

No. S-17. | BuShips problems No. U4-1CD, U2-9CD.

Box 7 Folder 61
Antenna directivity patterns on U.S.S. Petrof Bay (CVE 80) TBK, TBL and TDE whip and VHF antennas. Prepared by R. V. Steppler, 1944 August 23

No. R-41. | BuShips problem No. B3-12D.

Box 7 Folder 62
Antenna directivity patterns for U.S.S. Halloran (DE-305) - Comparison between nearby and remote transmissions, effect of radar training Upon TBS patterns. Prepared by R. T. Brackett, 1944 August 30

No. R-42. | BuShips problem No. B3-12D.

Box 7 Folder 63
An Acoustic interferometer for the measurement of sound velocity in the ocean. Prepared by R. J. Urick, 1944 September 18

No. S-18. | BuShips problem No. U4-1CD.

Box 7 Folder 64
Antenna directivity patterns of U.S.S. Trepang (SS 412) and submarine and frigate shunt excited superstructure radiation measurements. Prepared by R. V. Steppler, 1944 October 12

No. R-43. | BuShips problem No. B3-12D.

Box 7 Folder 65
Predicted low level coverage of S-band shipborne radars as affected by weather. Prepared by L. L. Whittemore, L. W. Cross, E. J. Wyrostek and F. R. Abbott, 1944 November 1

No. WP-N4. | BuShips problem No. X4-49CD.

Box 7 Folder 66
Predicted low level coverage of 200 MCS band shipborne radars as affected by weather. Prepared by L. L. Whittemore, L. W. Cross, E. J. Wyrostek and F. R. Abbott, 1944 November 4

No. WP-15. | BuShips problem No. X4-49CD.

Box 7 Folder 67
Wired sonde equipment for high altitude soundings. Prepared by L. J. Anderson, 1944 November 17

No. WP-16. | BuShips problem No. X4-49CD.

Box 7 Folder 68
Identification of projectile fragments for the Anti-Aircraft Training Center, Pacific Beach, California. Prepared by C. H. Milligan and W. K. Lyon, 1944 December 16

No. S-19.

Box 7 Folder 69
Atmospheric refraction - A preliminary quantitative investigation. Prepared by L. J. Anderson, F. P. Dane, J. P. Day, R. F. Hopkins, L.G. Trolese and Lt. (JG) A. P. D. Stokes, 1944 December 28

No. WP-17. | BuShips problem No. X4-49CD.

Box 7 Folder 70
Theory, design and construction of a remote antenna tuning unit frequency range: 2.0 to 18.2 MCS. Prepared by J. L. Olsen and C. W. Tirrell, 1944 December 30

No. R-44. | BuShips problem No. T-100CD.

Box 7 Folder 71
Thermal wake detection. Prepared by David H. Garber, Robert J. Urick and Joseph Cryden, 1945 January 12

No. S-20.

Box 7 Folder 72
Atmospheric waves fluctuations in high frequency radio waves. Prepared by J. B. Smyth and L. G. Trolese, 1945 February 1

No. WP-18. | BuShips problem No. X4-49CD.

Box 7 Folder 73
Atmospheric refraction under conditions of a radiation inversion. Prepared by L. J. Anderson, J. P. Day, C. H. Freres, R. U. F. Hopkins, J. B. Smyth and A. P. D. Stokes, 1945 April 21

No. WP-19. | BuShips problem No. X4-49CD.

Box 7 Folder 74
A Note on the resistance of electric hygrometer elements. Prepared by L. J. Anderson and S. T. Stephenson, 1945 May 8

No. AERO-1.

Box 7 Folder 75
Summary of discussion at Navy Radio and Sound Laboratory on Bureau of Ships problem B22RD "Ship Type Antenna Systems", 1945 June 4-5

BuShips problem No. B22-RD.

Box 7 Folder 76
A/S detection in harbor defense - Analysis of operational tests at Puget Sound, 1946 June 6
Box 7 Folder 77
Bathythermograph pen lifting attachment and expanded scale bathythermograph. Prepared by F. Kelly Eccles, Robert M. Sherwood and Waldo K. Lyon, 1945 June 7

No. S-21. | BuShips problem No. S68 (U2-9CD).

Box 7 Folder 78
K-band attenuation due to rainfall. Prepared by L. J. Anderson, J. P. Day, L. G. Trolese, C. H. Freres, A. P. D. Stokes and J. B. Smyth, 1945 June 8

No. WP-20. | BuShips problem No. X4-49SD.

Box 7 Folder 79
Panoramic recorder (Small object detector and plotter). Prepared by Louis E. Smith, Earl F. Kiernan and Waldo K. Lyon, 1945 July 3

No. S-22. | BuShips problem No. S68 (U5-4CD).

Box 7 Folder 80
Improvements in USNRSL meteorological sounding equipment. Prepared by L. J. Anderson, S. T. Stephenson and A. P. D. Stokes, 1945 July 3

No. WP-21. | BuShips problem No. X4-49CD.

Box 7 Folder 81
Test of radar beacons. Prepared by R. V. Keeran and H. E. Bryan, 1945 August 4

No. R-45. | BuShips problem No. X-161CD.

Box 7 Folder 82
U.S. Navy Radio and Sound Laboratory - Quarterly Report, 1945 September
Box 7 Folder 83
Some measurements of humidity, temperature, and refractive index gradients immediately above the ocean. Prepared by S. T. Stephenson, 1945 September 12

No. WP-22. | BuShips problem No. X4-49CD.

Box 7 Folder 84
Remote monitoring of transponder beacons. Prepared by H. E. Bryan, R. R. McFadden and B. G. Ward, 1945 September 17

No. R-46. | BuShips problem No. X159CD.

Box 7 Folder 85
Radar - MK III IFF - Modification of BM equipment suppressor pulse circuits. Prepared by F. W. Schott, 1945 September 18

No. R-47. | BuShips problem No. X-167CD.

Box 7 Folder 86
Sonic radio-link wave height meter. Prepared by L. E. Smith, 1945 October 1

No. S-25. | BuShips problem No. U24CD.

NAVY ELECTRONICS LABORATORY INTERNAL TECHNICAL MEMORANDA

Scope and Contents of Series

Series 5) NAVY ELECTRONICS LABORATORY INTERNAL TECHNICAL MEMORANDA: Arranged chronologically.

Box 8 Folder 1
Acoustic traveling waves in rods as directive elements for underwater sound applications. Prepared by Theory and Applied Physics staff, 1952 January 24

No. 9. | NE 121401. | Subtask 1. | Problem NEL-2A8.

Box 8 Folder 2
Transmitting angular position data using phase shifting capacitors. Prepared by A. F. Bowen, 1952 March 24

No. 2. | NE 130711. | Problem NEL-6F1.

Box 8 Folder 3
Temperatures in the vicinity of an atomic explosion. Prepared by Joseph J. Marciano, 1952 March 24

No. 8. | Problem NEL-3H4a.

Box 8 Folder 4
A Study of the effect of carrier frequency drift on AC lead networks. Prepared by C. T. Kleiner, 1952 March 28

No. 4. | NE 130711. | Problem NEL-6F1.

Box 8 Folder 5
Further developments in selective spectrum lighting. Prepared by Max W. Lund, 1952 April 1

No. 7. | NE 121303. | Subtask 2. | Problem NEL-3B2c.

Box 8 Folder 6
A Method for determining the optimum ratios for radar aided tracking mechanisms. Prepared by J. H. Poirier, 1952 April 2

No. 11. | NE 081412. | Subtask 1. | Problem NEL-6M5.

Box 8 Folder 7
Investigation of simulated blind flying equipment. Prepared by C. T. White and Paul G. Cheatham, 1952 April 30

No. 10. | NE 121303. | Subtask 3. | Problem NEL-3B3.

Box 8 Folder 8
Remote indicating system for a shaft position. Prepared by Howard L. Newman, 1952 May 1

No. 3. | NE 051456. | Subtask 7. | Problem NEL-3C8.

Box 8 Folder 9
Thyration speed control servo. Prepared by N. H. Kennedy, 1952 June 14

No. 18. | NE 121303. | Subtask 3. | Problem NEL-3B2.

Box 8 Folder 10
A Mechanical transformer to increase the low frequency response of a condenser hydrophone and allow deep submergence. Prepared by Donald H. Robey, 1952 June 18

No. 12. | NE 951248. | Subtask 2. | Problem NEL-2C1.

Box 8 Folder 11
Human engineering aspects of the Boreader film reader. Prepared by Wesley E. Woodson, 1952 July 1

No. 13. | NE 081412. | Subtask 1. | Problem NEL-3B2b.

Box 8 Folder 12
Human engineering aspects of the sonar set AN/SQG-1. Prepared by Wesley E. Woodson, 1952 July 1

No. 15. | NE 121303. | Subtask 3. | Problem NEL-3B1.

Box 8 Folder 13
A Phasing system for directive radiation from a disordered assemblage of radiating elements. Prepared by F. R. Abbott, 1952 July 2

No. 14. | NE 121401. | Subtask 1. | Problem NEL-2A8.

Box 8 Folder 14
Conclusions of the task group for the Anti-Submarine Technical Evaluation Center (ASTEC). Prepared by C. M. Beyer, F. G. Fisher, D. W. Conover, W. P. Mitchel and C. C. Cram, 1952 July 11

No. 21. | NE 051240. | Subtask 1. | Problem NEL-5M2.

Box 8 Folder 15
Receiver antenna and tuning control servo amplifier. Prepared by N. H. Kennedy, 1952 July 14

No. 16. | NE 020149. | Subtask 1. | Problem NEL-2D12.

Box 8 Folder 16
D. C. controlled thyration servo amplifier. Prepared by N. H. Kennedy, 1952 July 14

No. 17. | NE 060909. | Subtask 1. | Problem NEL-3C3.

Box 8 Folder 17
Evaluation tests on the automatic range-tracking servo system of the AN/KPQ-1 (XG-1) radar (Modified). Prepared by G. M. Dodd and N. H. Kennedy, 1952 July 14

No. 19. | NE NC062411. | Problem NEL-3E2.

Box 8 Folder 18
Automatic range and bearing of random targets with spherical acoustic lens. Prepared by W. J. Toulis, 1952 July 14

No. 20. | NE 121401. | Subtask 1. | Problem NEL-2A7.

Box 8 Folder 19
Comparison of sonar systems for the detection of bottomed mines. Prepared by E. S. Lamar and P. H. Miller, 1952 August 1

No. 22. | NE 091206. | Subtask 1. | Problem NEL-2M1.

Box 8 Folder 20
Radar navigation and shore bombardment trainer - AN/SPN-T1 (XG-1). Prepared by S. W. Pethley, 1952 August 1

No. 23. | Problem NEL-2F8.

Box 8 Folder 21
The Philosophy of systems development and its role in the research & development laboratory. Prepared by R. O. Burns, 1952 August 1

No. 24. | Problem NEL-3Z1.

Box 8 Folder 22
The Transmission of sound through sandwiches. Prepared by R. E. Gaskell, 1952 August 13

No. 25. | NE 051248. | Subtask 2. | Problem NEL-2C1.

Box 8 Folder 23
A Simplified method of deducing the influence of errors on the effectiveness of a system. Prepared by K. J. Friedenthal, 1952 August 13

No. 26. | NE 091206. | Subtask 1. | Problem NEL-6M2.

Box 8 Folder 24
Relative contributions to JT sonar self-noise on U.S.S. Bluegill from propeller, hydrophone motion, auxiliaries and vibration. Prepared by C. J. Krieger, 1952 August 14

No. 27. | NE 121401. | Subtask 1. | Problem NEL-2A8.

Box 8 Folder 25
Pressure-volume relationship for corprene and celltite rubber. Prepared by Dee J. Fraughton, 1952 August 29

No. 31. | NE 051248. | Subtask 2. | Problem NEL-2C2.

Box 8 Folder 26
Theory of the effect of a magnetic field on the phase velocity of sound in electrically conducting plates. Prepared by Donald H. Robey, 1952 September 1

No. 60. | NE 051248. | Subtask 2. | Problem NEL-2C1.

Box 8 Folder 27
NEL repairable plug-in package unit. Prepared by Robert H. Harwood, 1952 September 9

No. 28. | NE 051334. | Subtask 1. | Problem NEL-3F7.

Box 8 Folder 28
The Rectifying property of polarized barium titanate. Prepared by Donald L. Waidelich, 1952 September 12

No. 30. | NE 051248. | Subtask 2. | Problem NEL-2C1.

Box 8 Folder 29
Human engineering aspects of the sonar set AN/UQX-4. Prepared by Richard Coburn, 1952 September 12

No. 39. | NE 121303. | Subtask 3. | Problem NEL-3B1.

Box 8 Folder 30
Target visibility on the dark-trace CRT as a function of ambient illumination. Prepared by C. T. White, 1952 September 15

No. 29. | NE 121303. | Subtask 3. | Problem NEL-3B2.

Box 8 Folder 31
Study of bottom reflection losses for underwater sound. Prepared by K. V. Mackenzie, 1952 September 24

No. 32. | NE 120221. | Subtask 3. | Problem NEL-2A1.

Box 8 Folder 32
The Necessary relations between sound propagation in sea water and electromagnetic phenomena. Prepared by J. M. Stroud, 1952 September 29

No. 33. | NE 121303. | Subtask 3. | Problem NEL-3B1.

Box 8 Folder 33
Brightness enhancement of a flashing red light. Prepared by M. Lichtenstein, D. Conover and P. Hamilton, 1952 October 1

No. 41. | NE 121303. | Subtask 3. | Problem NEL-3B1.

Box 8 Folder 34
Time and the brain. Prepared by John M. Stroud, 1952 October 6

No. 34. | NE 121303. | Subtask 3. | Problem NEL-3B2.

Box 8 Folder 35
Human engineering aspects of the sonar set AN/SQS-7. Prepared by Richard Coburn, 1952 October 6

No. 38. | NE 121303. | Subtask 3. | Problem NEL-3B1.

Box 8 Folder 36
Improving stability of toroidal coils. Prepared by Allen T. Steinkamp, 1952 October 7

No. 35. | NE 020149. | Subtask 1. | Problem NEL-2D12.

Box 8 Folder 37
Continuous transmission (FM) mine detection sonar model XHB. Prepared by A. H. Roshon Jr., 1952 October 8

No. 36. | NE 051456. | Subtask 7. | Problem NEL-3C8.

Box 8 Folder 38
Cycling "on-off" timer. Prepared by J. L. Leonard and C. E. Cunningham, 1952 October 15

No. 37.

Box 8 Folder 39
Sonic power transmission detection on vibrating structures. Prepared by George M. Coleman, 1952 October 27

No. 45. | NE 121401. | Subtask 1. | Problem NEL-2A7.

Box 8 Folder 40
Modulated auto correlation functions as a secure intelligence handling technique - Proposal. Prepared by John M. Stroud, 1952 October 28

No. 40. | NE 121303. | Subtask 3. | Problem NEL-3B3.

Box 8 Folder 41
Human engineering aspects of the sonar set AN/SQS-9. Prepared by W. E. Woodson and Richard Coburn, 1952 October 28

No. 42. | NE 121303. | Subtask 3. | Problem NEL-3B1.

Box 8 Folder 42
An Approach to system error analysis. Prepared by L. V. Mclean, 1952 November 6

No. 43. | NE 091206. | Subtask 1. | Problem NEL-6M2.

Box 8 Folder 43
A Motion picture camera of simple design which is effectively shutterless. Prepared by John M. Stroud, 1952 November 10

No. 44. | NE 121303. | Subtask 3. | Problem NEL-3B2.

Box 8 Folder 44
Instrumentation for the determination of the phase relation between blade position and ship propeller cavitation. Prepared by C. J. Krieger and R. S. Gales, 1952 November 25

No. 49. | NE 121401. | Subtask 1. | Problem NEL-2A7.

Box 8 Folder 45
Hydrophone system calibration at the Point Sur Sofar station. Prepared by R. Halley and O. W. Schreiber, 1952 December 5

No. 46. | NE 121401. | Subtask 1. | Problem NEL-2A8.

Box 8 Folder 46
An Investigation of focusing within the deep sound channel-off Point Sur. Prepared by R. M. Zarnowitz, 1952 December 10

No. 47. | NE 120221. | Subtask 3. | Problem NEL-2A5.

Box 8 Folder 47
An Electromechanical system for evaluating vibration-measuring instruments. Prepared by R. A. Rasmussen, 1952 December 30

No. 48. | NE 121401. | Subtask 1. | Problem NEL-2A7.

Box 8 Folder 48
A Study of the spectrum of ship propeller noise. Prepared by C. J. Krieger, 1953 January 7

No. 50. | NE 121401. | Subtask 1. | Problem NEL-2A8.

Box 8 Folder 49
Low-frequency array phasing systems using vibrations or magnetic recording media as delay devices. Prepared by C. J. Krieger and F. R. Abbott, 1953 January 12

No. 56. | NE 121401. | Subtask 1. | Problem NEL-2A8.

Box 8 Folder 50
A Cross-polarization technique for lighting control. Prepared by C. T. White and J. F. Bryant, 1953 January 15

No. 51. | NE 121303. | Subtask 3. | Problem NEL-3B2C.

Box 8 Folder 51
Trip report - Travel to Washington, D.C. and United Kingdom. Prepared by R. M. Sherwood, 1953 January 15

No. 64. | NE NS 713217. | Subtask 4. | Problem NEL-2A8d.

Box 8 Folder 52
Relative to true bearing servo system. Prepared by A. F. Bowen, 1953 January 19

No. 52. | NE 051456. | Subtask 3. | Problem NEL-3M2.

Box 8 Folder 53
An Application of the single-sideband suppressed carrier system for the conversion from low to high audio frequency signals with phase preservation. Prepared by Jack Wong, 1953 January 19

No. 57. | NE 121401. | Subtask 1. | Problem NEL-2A8.

Box 8 Folder 54
Low frequency electric and magnetic energy transfer in sea water. Prepared by E. R. Abbott, 1953 January 28

No. 53. | NE 121401. | Subtask 1. | Problem NEL-2A8.

Box 8 Folder 55
Prefabricated panel-sections as a standardized packaging technique. Prepared by Richard Coburn, 1953 February 2

No. 54. | NE 121303. | Subtask 3. | Problem NEL-3B1.

Box 8 Folder 56
Human considerations in the design of the radar indicator, AN/SPA-12. Prepared by Richard Coburn, 1953 February 3

No. 55. | NE 121303. | Subtask 3. | Problem NEL-3B1.

Box 8 Folder 57
Survey of automatic data reduction methods. Prepared by Harold D. Dickstein, 1953 February 4

No. 58. | NE 010921. | Subtask 4. | Problem NEL-5D2a.

Box 8 Folder 58
A Comparison of performance rating and auditor test scores of submarine sonar operators. Prepared by John C. Webster, 1953 February 12

No. 59. | NE 121303. | Subtask 1. | Problem NEL-1B1.

Box 8 Folder 59
Configurational analysis. Prepared by Douglas G. Ellison, 1953 February 16

No. 61. | NE 121303. | Subtask 3. | Problem NEL-3B2.

Box 8 Folder 60
Own ship position solver. Prepared by A. F. Bowen, 1953 February 25

No. 63. | NE 051456. | Subtask 7. | Problem NEL-3M2.

Box 8 Folder 61
Mortar location computer. Prepared by Norman H. Kennedy, 1953 February 25

No. 66. | NE NC 062411. | Problem NEL-3E2.

Box 8 Folder 62
Proposed interim modification of the AN/SSQ-T2 (XG-1) CIC/PGDS, to meet urgent ASW dual ship training needs at the CIC/TTC, San Diego. Prepared by Rubin Goldberg, 1953 February 26

No. 65. | NE 051336. | Subtask 2. | Problem NEL-2H5.

Box 8 Folder 63
Some signals of seismic origin received at Pacific Sofar stations. Prepared by M. J. Sheehy, 1953 March 3

No. 62. | NE 120221. | Subtask 1. | Problem NEL-2A11.

Box 8 Folder 64
Use of Arma type B and type G resolvers. Prepared by A. F. Bowen, 1953 March 17

No. 69. | NE 130711. | Subtask 4. | Problem NEL-6F1.

Box 8 Folder 65
The Transmission of sound through a three layer sandwich. Prepared by D. H. Potts, 1953 March 18

No. 68. | NE 051248. | Subtask 2. | Problem NEL-2C1.

Box 8 Folder 66
Experimental verification of mathematically predicted performance of several heterodyne auto-correlators. Prepared by W. E. Klund, 1953 March 18

No. 72. | NE 041216. | Subtask 1. | Problem NEL-3C7d.

Box 8 Folder 67
Arc-over of heater terminals in the temperature-humidity altitude chambers - Experiments on cause and prevention of. Prepared by Bernard L. Lieb, 1953 March 24

No. 70.

Box 8 Folder 68
Preliminary information on the influence of input errors on the effectiveness of an A/S attack system. Prepared by R. A. Mueller and K. J. Friedenthal, 1953 March 30

No. 67. | NE 091206. | Subtask 1. | Problem NEL-6M2.

Box 8 Folder 69
Summary of sea experiments August 1952 to March 1953. Prepared by Knute J. Takle and Richard J. Derenthal, 1953 April 1

No. 83.

Box 8 Folder 70
Operational tests of two types of linear array hydrophones. Prepared by J. C. Rock, 1953 April 14

No. 108. | NE 120221. | Subtask 3. | Problem NEL-2A1.

Box 8 Folder 71
An Isolation amplifier for large signals. Prepared by Glen M. Dodd, 1953 April 17

No. 71. | NE 130711. | Subtask 4. | Problem NEL-6F1.

Box 8 Folder 72
A 60-Cycle phase sensitive demodulator for the brush recorder. Prepared by Z. H. Blankers, 1953 April 17

No. 73. | NE 130711. | Subtask 4. | Problem NEL-6F1.

Box 8 Folder 73
Proposed functional requirements and training: Considerations for the evaluation of the radar navigation and shore bombardment trainer AN/SPN-T1 (XG-1). Prepared by Rubin Goldberg, 1953 April 23

No. 74. | Problem NEL-2F8.

Box 8 Folder 74
Study of hydrodynamic equations of ship's motion. Prepared by Robert L. Ogram, 1953 April 28

No. 76.

Box 8 Folder 75
A Proposal for a coordinated NEL program on low-frequency sonar. Prepared by R. A. Mueller, K. V. Mackenzie and F. X. Byrnes, 1953 May 1

No. 75.

Box 8 Folder 76
Interim modification of the AN/SSQ-T2 (XG-1) CIC problem generator and display system. Prepared by R. L. Ogram, 1953 May 14

No. 81. | NE ST-22. | Problem NEL-2H8.

Box 8 Folder 77
Variable resonant transducer. Prepared by Donald H. Robey, 1953 May 28

No. 86. | NE 051248. | Subtask 2. | Problem NEL-2C1.

Box 8 Folder 78
Some modulator techniques for producing short pulses in high powered magnetrons. Prepared by Thomas J. Parker, 1953 June 1

No. 77. | NE 050632. | Subtask 1. | Problem NEL-3E1c.

Box 8 Folder 79
Horizontal refraction at the sound channel-axis in the deep Bering Sea. Prepared by R. M. Lesser and R. M. Zarnowitz, 1953 June 1

No. 78. | NE 120221. | Subtask 3. | Problem NEL-2A5.

Box 8 Folder 80
Identities between elastic constants for isotropic solids. Prepared by J. F. Haskins, 1953 June 1

No. 79. | NE 051248. | Subtask 2. | Problem NEL-2C1.

Box 8 Folder 81
Calibration of electroacoustic transducers: Computation of characteristics from test data. Prepared by Ellen S. Stewart, 1953 June 1

No. 80. | NE 051248. | Subtask 2. | Problem NEL-2C3.

Box 8 Folder 82
Some measurements of sound output levels and listening thresholds of underwater swimmers. Prepared by R. M. Ady, 1953 June 5

No. 82. | NE 051456. | Subtask 1. | Problem NEL-3C10.

Box 8 Folder 83
CIC team training center to Navy Electronics Laboratory radar distribution equipment. Prepared by H. C. Kerr Jr. and H. F. Reiden, 1953 June 5

No. 84.

Box 8 Folder 84
Structural elements for use in rapid mockup construction. Prepared by Fred G. Henry, 1953 June 12

No. 85. | NE 1221303. | Subtask 3. | Problem NEL-3B1d.

Box 8 Folder 85
Some theoretical aspects of low frequency moving coil transducer design for deep submergence. Prepared by D. H. Robey, 1953 June 15

No. 118. | NE 051248. | Subtask 2. | Problem NEL-2C1.

Box 8 Folder 86
Color and pattern coding as applied to large opaque plotting surfaces. Prepared by Carroll T. White and Wesley E. Woodson, Jr., 1953 June 16

No. 88. | NE 121303. | Subtask 3. | Problem NEL-3B1.

Box 8 Folder 87
Electronic data correlator and computer. Prepared by Harold R. Ahrens, 1953 June 22

No. 87. | NE 120308. | Subtask 1. | Problem NEL-1A1.

Box 8 Folder 88
Linearized hyperbolic transducer. Prepared by A. A. Hudimac and J. J. Barry, 1953 June 30

No. 90. | NE 051247. | Subtask 4. | Problem NEL-2A10.

Box 8 Folder 89
A Novel gated marker circuit. Prepared by George D. Jensen, 1953 July 1

No. 89. | NE 050632. | Subtask 1. | Problem NEL-3E1d.

Box 8 Folder 90
Application of correlation techniques to secure sonar communication. Prepared by Woodrow H. Littrell, 1953 July 8

No. 91. | NE 041216. | Subtask 1. | Problem NEL-3C7c.

Box 8 Folder 91
Human engineering rationale in scale design. Prepared by M. Lichtenstein and W. E. Woodson, 1953 July 16

No. 92. | NE 121303. | Subtask 3. | Problem NEL-3B1.

Box 8 Folder 92
A Human engineering evaluation of an experimental dial index design. Prepared by M. Lichtenstein and W. E. Woodson, 1953 July 27

No. 94. | NE 121303. | Subtask 1. | Problem NEL-3B1a.

Box 8 Folder 93
A Method of recording high speed data on magnetic tape at low forward tape velocities. Prepared by John P. Day, 1953 July 30

No. 93. | NE 120308. | Subtask 1. | Problem NEL-1A1.

Box 8 Folder 94
Effect of velocity gradient conditions at Carr Inlet on sound intensity distribution. Prepared by Frances A. Dahm, 1953 August 1

No. 96. | NE NS713-217. | Subtask 4. | Problem NEL-2A8d.

Box 8 Folder 95
Impedance of a rigid piston in an infinite rectangular array of pistons. Prepared by A. A. Hudimac, 1953 August 10

No. 95. | NE 121401. | Subtask 1. | Problem NEL-2A8.

Box 8 Folder 96
Magnetic delay device using magnetic cylinder and gears. Prepared by C. J. Krieger, 1953 August 18

No. 102. | NE 121401. | Subtask 1. | Problem NEL-2A8.

Box 8 Folder 97
Flutter in lightweight recording. Prepared by S. H. Sessions and E. F. Travis, 1953 September 8

No. 98. | Problem NEL-7Z1.

Box 8 Folder 98
Multi-display tube and readout device (Laminated, glow-discharge type). Prepared by Edwin W. Smith, 1953 September 8

No. 100. | NE 121303. | Subtask 3. | Problem NEL-3B1.

Box 8 Folder 99
Enhancement of signals on a ground-stabilized display scope. Prepared by P. J. Himes, 1953 September 14

No. 99. | NE 051456. | Subtask 3. | Problem NEL-3M2.

Box 8 Folder 100
The Theoretical design of blocking oscillator circuits. Prepared by Thomas J. Parker, 1953 September 21

No. 97. | NE 050632. | Subtask 1. | Problem NEL-3E1d.

Box 8 Folder 101
Automatic shaft position data encoder. Prepared by Harold D. Dickstein, 1953 October 1

No. 101. | NE 010921. | Subtask 4. | Problem NEL-5D2a.

Box 8 Folder 102
Simple matrix algebra applied to transistor circuits. Prepared by James C. Sampson, 1953 October 1

No. 103. | NE 130711. | Subtask 4. | Problem NEL-6F1.

Box 8 Folder 103
Two dimensional electrical delay networks. Prepared by F. R. Abbott, 1953 October 6

No. 106. | NE 121401. | Subtask 1. | Problem NEL-2A8.

Box 8 Folder 104
Oceanographic factors in the mine countermeasure tests at Panama City, Florida in April-May 1953. Prepared by Alfred J. Carsola, 1953 October 19

No. 104. | NE 120221. | Subtask 3. | Problem NEL-2A5.

Box 8 Folder 105
A Tube tester for receiving-type tubes operating in the positive grid region. Prepared by T. J. Parker and W. D. Wilson, 1953 October 20

No. 105. | NE 050632. | Subtask 1. | Problem NEL-3E1c.

Box 8 Folder 106
Low frequency projector development. Prepared by R. C. Mathes, 1953 October 28

No. 107. | NE 051248. | Subtask 2. | Problem NEL-2C1.

Box 8 Folder 107
Correction of hydroacoustic output measurements for effects of surface reflection under specific refractive conditions. Prepared by F. A. Dahm, 1953 November 15

No. 112. | NE 121401. | Subtask 1. | Problem NEL-2A8.

Box 8 Folder 108
A Two-dimensional electrical delay network. Prepared by R. N. Goss, 1953 November 15

No. 113. | NE 121401. | Subtask 1. | Problem NEL-2A8.

Box 8 Folder 109
Pseudo-random noise generators. Prepared by R. G. Stephenson, 1953 November 23

No. 109. | NE 041216. | Subtask 1. | Problem NEL-3C7c.

Box 8 Folder 110
Secure communications systems using pseudo-random noise generators (Secret). Prepared by R. G. Stephenson, 1953 November 23

No. 110. | NE 041216. | Subtask 1. | Problem NEL-3C7c.

Box 8 Folder 111
An Investigation of certain electrical and mechanical characteristics of twenty-six polyester resins. Prepared by E. F. Meckfessel, 1953 November 23

No. 111. | NE 050632. | Subtask 1. | Problem NEL-3E1e.

Box 8 Folder 112
Sequential scan radar detection of small targets in the presence of high intensity sea return. Prepared by W. F. Bradley Jr. and E. F. Meckfessel, 1953 November 30

No. 115. | NE 050632. | Subtask 1. | Problem NEL-3E1e.

Box 8 Folder 113
The Effect of radiation on the vibration of a clamped square plate. Prepared by A. A. Hudimac, 1953 December 1

No. 114. | NE 121401. | Subtask 1. | Problem NEL-2A8.

Box 8 Folder 114
Theory of the effect of a thin air film on the displacement of a stretched circular membrane. Prepared by D. H. Robey, 1953 December 9

No. 119. | NE 051248. | Subtask 2. | Problem NEL-2C1.

Box 8 Folder 115
On a class of solutions of Maxwell's equations. Prepared by D. H. Potts, 1953 December 10

No. 117. | NE 120308. | Subtask 2. | Problem NEL-1A5.

Box 8 Folder 116
Human engineering aspects of the sonar receiving set AN/FQR-1 (Harbor Defense Listening Array). Prepared by W. E. Woodson, 1953 December 16

No. 116. | NE 121303. | Subtask 3. | Problem NEL-3B1.