NSA encryption systems (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "NSA encryption systems" in English language version.

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books.google.com

A History of US Communications Security; the David G. Boak Lectures, National Security Agency (NSA), Volumes I, 1973, Volumes II 1981, partially released 2008, additional portions declassified October 14, 2015

Melville Klein, "Securing Record Communications: The TSEC/KW-26", 2003, NSA brochure, p. 4, (PDF)
Thomas R. Johnson (2009-12-18). "American Cryptology during the Cold War, 1945-1989.Book III: Retrenchment and Reform, 1972-1980, page 232" (PDF). NSA, DOCID 3417193. Archived from the original (PDF) on 2010-05-27. Retrieved 2010-01-03.

"US Army Field Manual FM-11-1, 1996, Chapter 1, Section C". Archived from the original on 30 December 2005. Retrieved 24 April 2023.{{cite web}}: CS1 maint: bot: original URL status unknown (link)
"Archived copy" (PDF). Archived from the original on March 1, 2012. Retrieved 2012-03-02.{{cite web}}: CS1 maint: archived copy as title (link) CS1 maint: bot: original URL status unknown (link)
Thomas R. Johnson (2009-12-18). "American Cryptology during the Cold War, 1945-1989.Book III: Retrenchment and Reform, 1972-1980, page 232" (PDF). NSA, DOCID 3417193. Archived from the original (PDF) on 2010-05-27. Retrieved 2010-01-03.