Spies, Intelligence & Cryptography
While spies, secret codes and clandestine operations are the stuff movies and books are made of, much of the inspiration comes from actual events. The United States has carried on foreign intelligence activities since the days of George Washington, but only since World War II have they been coordinated on a government-wide basis.
For those interested in tracing the history of intelligence, both within the military and in civil operations, as well as critical analysis of intelligence operations, a good place to start is with the
GovDocs LibGuide on "Spies, Intelligence and Cryptography."

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