- University of Minnesota. Radio Station KUOM (46)
- A.V.E.S. Photographic Laboratories (25)
- Morris, Alan, 1922- (18)
- University of Minnesota. Audio Visual Library Services (14)
- YMCA of the USA (10)
- Council on Social Work Education (9)
- Baraka, Imamu Amiri (Leroi Jones) (4)
- Howe, John H., 1913-1997 (4)
- Roger Johnson Associates (4)
- Aeronautical Chart and Information Center, United States Air Force (3)
- American Geographical Society (2)
- Burroughs Corporation (2)
- Harlem Branch YMCA (2)
- Johnson, Thomas A. (2)
- Lansdale, Herbert Parker, Jr., 1898-1988 (2)
- National Council of the Young Men's Christian Associations of the United States of America. Colored Work Department. (2)
- National Federation of Settlements and Neighborhood Centers (2)
- United Neighborhood Houses of New York (2)
- United States. National Bureau of Standards. (2)
- University of Minnesota (2)
