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- United States. National Security Agency/Central Security Service. Center for Cryptologic History18
- Walter L. Pforzheimer Intelligence Collection (Beinecke Rare Book and Manuscript Library)13
- United States. National Security Agency/Central Security Service. Center for Cryptologic History, issuing body5
- United States. Congress. House. Committee on the Judiciary. Subcommittee on Economic and Commercial Law4
- United States. National Security Agency4
- United States. National Security Agency/Central Security Service. History and Publications Staff4
- Weber, Ralph E. (Ralph Edward), 1926-4
- Alvarez, David J.3
- Bamford, James3
- Benson, Robert Louis3
- Burke, Colin B., 1936-3
- Burns, Thomas L.3
- Haynes, John Earl3
- Klehr, Harvey3
- United States. Congress. House. Committee on Foreign Affairs. Subcommittee on Economic Policy, Trade, and Environment3
- Williams, Jeannette3
- Barker, Wayne G.2
- Breindel, Eric, 1955-19982
- Budiansky, Stephen2
- Burton, Kate2