National Security Agency — declassified histories

USintelligencemanual

https://www.nsa.gov/ ↗

Cryptologic Almanac items are published as unclassified PDFs on media.defense.gov.

Korpustaki belgeler (1)

• NSA-CRYPTOLOGIC-ALMANAC-SPRING-2 — From Spring, into a Long Winter's Night: The Czechoslovakian Crisis of 1968, Part Two (2003-02-28)