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  1. A-frame at sunset

    • Collection: Edward Sheldon Barr Papers
    • Name: Barr, Edward Sheldon, 1933-; Capricorn Expedition (1952-1953)
    • Date: 1952
    • Topic: Oceanographic instruments
    • Format: image
  2. Discovering the MidPac Mountain Range on my watch! Edward S. Barr and the fathometer on Horizon, MidPac Expedition

    • Collection: Edward Sheldon Barr Papers
    • Name: Barr, Edward Sheldon, 1933-; Midpac Expedition (1950); Horizon (Ship); Barr, Edward Sheldon, 1933-
    • Date: 1950-08-31
    • Topic: Oceanographic research ships--Interiors; Oceanographic instruments
    • Format: image
  3. Edward S. Barr with signal light, R/V Horizon, MidPac Expedition

    • Collection: Edward Sheldon Barr Papers
    • Name: Barr, Edward Sheldon, 1933-; Horizon (Ship); Midpac Expedition (1950); Barr, Edward Sheldon, 1933-
    • Date: 1950
    • Topic: Oceanographic instruments; Nautical instruments; Signal lights
    • Format: image
  4. Frank Nolan, George Hetzel, Jim Faughn, Jim Snodgrass secure Maxwell's temperature probe to AH bulkhead, MidPac Expedition

    • Collection: Edward Sheldon Barr Papers
    • Name: Barr, Edward Sheldon, 1933-; Midpac Expedition (1950); Horizon (Ship); Faughn, James Lawrence, 1910-1985; Snodgrass, James Marion, 1908-1994; Hetzel, George F.; Nolan, Frank
    • Date: 1950
    • Topic: Heat flow; Oceanographic instruments
    • Format: image
  5. Heat probe on deck

    • Collection: Edward Sheldon Barr Papers
    • Name: Barr, Edward Sheldon, 1933-; Capricorn Expedition (1952-1953)
    • Date: 1952
    • Topic: Oceanographic instruments
    • Format: image
  6. Heat probe on deck

    • Collection: Edward Sheldon Barr Papers
    • Name: Barr, Edward Sheldon, 1933-; Capricorn Expedition (1952-1953)
    • Date: 1952
    • Topic: Oceanographic instruments; Heat flow
    • Format: image
  7. Jonsey and Darsey

    • Collection: Edward Sheldon Barr Papers
    • Name: Barr, Edward Sheldon, 1933-; Capricorn Expedition (1952-1953); Darsey, Bernard; Jones, Alan Churchill, 1927-
    • Date: 1952
    • Topic: Oceanographers; Oceanographic instruments
    • Format: image
  8. Long splice in main cable

    • Collection: Edward Sheldon Barr Papers
    • Name: Barr, Edward Sheldon, 1933-; Capricorn Expedition (1952-1953)
    • Date: 1952
    • Topic: Cables, Submarine; Oceanographic instruments
    • Format: image
  9. Robert Dill testing for core in Kullenberg core sampler

    • Collection: Edward Sheldon Barr Papers
    • Name: Barr, Edward Sheldon, 1933-; Horizon (Ship); Capricorn Expedition (1952-1953); Dill, Robert Floyd, 1927-
    • Date: 1952
    • Topic: Oceanographic instruments; Drill cores
    • Format: image
  10. Robert Floyd Dill and Roger Revelle rigging a Kullenberg piston core sampler. Midpac Expedition, 1950

    • Collection: Edward Sheldon Barr Papers
    • Name: Scripps Institution of Oceanography; Horizon (Ship); Midpac Expedition (1950); Dill, Robert Floyd, 1927-; Revelle, Roger, 1909-1991
    • Date: 1950
    • Topic: Oceanographic instruments
    • Format: image
  11. Seasick, Alan Jones and wave recorder instruments on Horizon

    • Collection: Edward Sheldon Barr Papers
    • Name: Barr, Edward Sheldon, 1933-; Horizon (Ship); Capricorn Expedition (1952-1953); Jones, Alan Churchill, 1927-
    • Date: 1952-10
    • Topic: Oceanographic instruments
    • Format: image
  12. Wayne Runyon, Frank Hetzel, and James Snodgrass stream the G.E.K. (geomagnetic-electrokinetigraph) cable from the side bucket at 10 knots!

    • Collection: Edward Sheldon Barr Papers
    • Name: Barr, Edward Sheldon, 1933-; Midpac Expedition (1950); Hetzel, George F.; Runyon, Wayne; Snodgrass, James Marion, 1908-1994
    • Date: 1950
    • Topic: Geomagnetism; Oceanographic instruments
    • Format: image
  13. 100 foot long splice in kinked main coring cable (now 30,000 feet)

    • Collection: Edward Sheldon Barr Papers
    • Name: Barr, Edward Sheldon, 1933-; Capricorn Expedition (1952-1953)
    • Date: 1952
    • Topic: Oceanographic instruments
    • Format: image
  14. Arthur Maxwell, right, with temperature probe. Midpac Expedition, 1950

    • Collection: Edward Sheldon Barr Papers
    • Name: Barr, Edward Sheldon, 1933-; Midpac Expedition (1950); Horizon (Ship); Maxwell, Arthur Eugene, 1925-
    • Date: 1950
    • Topic: Oceanographic instruments; Heat flow
    • Format: image
  15. Bathythermograph cast from R/V Horizon. Midpac Expedition, 1950

    • Collection: Edward Sheldon Barr Papers
    • Name: Barr, Edward Sheldon, 1933-; Horizon (Ship); Midpac Expedition (1950)
    • Date: 1950
    • Topic: Oceanographic instruments; Bathythermograph
    • Format: image
  16. Coring tube on deck

    • Collection: Edward Sheldon Barr Papers
    • Name: Barr, Edward Sheldon, 1933-; Capricorn Expedition (1952-1953)
    • Date: 1952
    • Topic: Oceanographic instruments
    • Format: image
  17. Edward Barr watches Fathometer traces as the newly discovered MidPac mountain range is plotted

    • Collection: Edward Sheldon Barr Papers
    • Name: Barr, Edward Sheldon, 1933-; Horizon (Ship); Midpac Expedition (1950)
    • Date: 1950
    • Topic: Oceanographic instruments
    • Format: image
  18. Heat probe

    • Collection: Edward Sheldon Barr Papers
    • Name: Barr, Edward Sheldon, 1933-; Capricorn Expedition (1952-1953)
    • Date: 1952
    • Topic: Oceanographic instruments; Heat flow
    • Format: image
  19. Radio Operator Nick Carter in Radio Room, R/V Horizon, MidPac Expedition

    • Collection: Edward Sheldon Barr Papers
    • Name: Barr, Edward Sheldon, 1933-; Midpac Expedition (1950); Horizon (Ship); Carter, Nick
    • Date: 1950
    • Topic: Oceanographic instruments; Radio on boats; Telecommunication--Equipment and supplies
    • Format: image
  20. Robert Huffer and Jeffery Frautschy deploying instrument

    • Collection: Edward Sheldon Barr Papers
    • Name: Barr, Edward Sheldon, 1933-; Horizon (Ship); Midpac Expedition (1950); Frautschy, Jeffery Dean; Huffer, Robert
    • Date: 1950
    • Topic: Oceanographic instruments
    • Format: image