- Photographic Laboratory (35)
- University of Minnesota Photographic Laboratory (34)
- Harlem Branch YMCA (20)
- University of Minnesota. Radio Station KUOM (20)
- Geological Survey of Minnesota (11)
- Gracza, Rezso (Ralph) (11)
- Moran, Kenneth J. (10)
- United States Geological Survey (9)
- Lansdale, Herbert Parker, Jr., 1898-1988 (8)
- England. Directorate of Colonial Surveys. (5)
- Mott, John R. (John Raleigh), 1865-1955 (5)
- YMCA of the USA (5)
- YMCA of the USA. International Division. (5)
- Army Map Service (4)
- Jarrett, S. William (4)
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- alumni assc (4)
- Cooper, William Skinner, 1884-1978 (3)
- Argentina. Hidrografía Navel de la Scretaría de Marina. (2)
- Berkeley, Edmund C. (Edmund Callis). (2)