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  1. 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
  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. Roger Revelle attaches Nansen bottle to lowering cable from starboard bucket

    • Collection: Edward Sheldon Barr Papers
    • Name: Barr, Edward Sheldon, 1933-; Horizon (Ship); Midpac Expedition (1950); Revelle, Roger, 1909-1991
    • Date: 1950
    • Topic: Oceanographic instruments
    • 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. 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
  6. 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
  7. 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
  8. 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
  9. 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
  10. 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
  11. 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