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.