See The National Security Archive's "The National Security Agency Declassified: National Security Archive Electronic Briefing Book No. 24," ed. Jeffrey T. Richelson, (2000, updated 2005), at http://www.gwu.edu/~nsarchiv/NSAEBB/NSAEBB24/index.htm.
See also, Cryptologic Spectrum Articles at: https://www.nsa.gov/public_info/declass/cryptologic_spectrum.shtml.
Communications Intelligence (COMINT) and Signals Intelligence (SIGINT):
Generally: A - G
Generally: H - Z
"Secrets of Signals Intelligence during the Cold War and Beyond."
Special issue of Intelligence and National Security
A - G
H - Z
Reportage Through the 1980s:
Defection of Mitchell and Martin (1960)
1990 - 1998:
David Sheldon Boone Spy Case (1998)
The Echelon Scare
National Cryptologic Museum
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