Cryptology and the United States Intelligence Community

The following documents detail the use of Cryptology inside the United States Intelligence Community.

1. A History of U.S. Communications Security Volume I [94 Pages, 3.18mb]
2. A History of U.S. Communications Security Volume II [61 Pages, 2.37mb]
   
   
3. American Cryptology During the Cold War 1945-1989, Book I [299 Pages, 14.87mb]
4. American Cryptology During the Cold War 1945-1989, Book II [369 Pages, 17.31mb]
5. American Cryptology During the Cold War 1945-1989, Book III [271 Pages, 11.77mb]
6. American Cryptology During the Cold War 1945-1989, Book IV [233 Pages, 9.21mb]
   
   
7. The Cryptology of the German Intelligence Services [38 Pages, 2.01mb]
8. German Clandestine Activities in South America in World War II [78 Pages, 4.80mb]
9. In the Shadow of War
10. The Origins of the National Security Agency 1940-1952 [155 Pages, 9.83mb]
11. Purple Dragon
12. Spartans in Darkness
13. Working Against the Tide