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- United States. National Aeronautics and Space Administration16,580
- Geological Survey (U.S.)14,363
- United States. Congress. House. Committee on Naval Affairs5,935
- United States5,693
- Langley Research Center4,208
- United States. War Department3,713
- United States. Congress. House2,408
- United States. Army. Air Corps2,095
- United States. Federal Emergency Management Agency2,005
- United States. Congress. Joint Committee on Taxation1,834
- United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch1,809
- United States. Congress. House. Committee on Ways and Means1,635
- United States. Bureau of the Census1,528
- United States. Congress. Senate. Committee on Foreign Relations1,522
- United States International Trade Commission1,467
- United States. Army. Quartermaster Corps1,435
- Ames Research Center1,421
- United States. Congress. Senate1,407
- Walter L. Pforzheimer Intelligence Collection (Beinecke Rare Book and Manuscript Library)1,333
- United States. Congress. Office of Technology Assessment1,325