- United States. Soil Conservation Service (95)
- Harlem Branch YMCA (21)
- Hansen, David L., 1952- (17)
- YMCA of the USA (17)
- Breneman, Donald L., 1943 - (16)
- University of Minnesota. Radio Station KUOM (12)
- Burroughs Corporation (11)
- Howe, John H., 1913-1997 (9)
- Tennessee Valley Authority. Regional Soils Data Base (8)
- Defense Mapping Agency Aerospace Center (6)
- Teresa Fett photography (6)
- La Raza Student Cultural Organization (5)
- Wilson, Robert Ashley, 1946 - 1988 (5)
- Butler Street YMCA (Atlanta, Ga.) (4)
- United States Geological Survey (4)
- Teresa Felt Photograpy (3)
- Baraka, Imamu Amiri (Leroi Jones) (2)
- British Antarctic Survey, Natural Environment Research Council. (2)
- Computer Science Department (2)
- England. Directorate of Overseas Surveys. (2)