A Brief History of Cryptology and Cryptographic Algorithms - Paperback

The Friedman Lectures on Cryptology - Hardcover

Silent Warriors: The Naval Security Group Reserve, 1945-2005 - Paperback

The Gambler and the Scholars: Herbert Yardley, William & Elizebeth Friedman, and the Birth of Modern American Cryptology - Hardcover

Encyclopedia of Cryptology - Hardcover

Eavesdropping on Hell: Historical Guide to Western Communications Intelligence and the Holocaust, 1939-1945 - Paperback

Codes and Ciphers of the Civil War - Paperback

The History of the Central Intelligence Agency (C.I.A.) - Paperback

Spydle: An Addictive Puzzle Book Packed with Historic Espionage Mysteries - Paperback

A History of Us Communications Intelligence During WWII: Policy and Administration - Paperback

Cryptology: Classical and Modern - Paperback

The Riddle of the Labyrinth: The Quest to Crack an Ancient Code - Paperback

The Imperial War Museums Code-Breaking Puzzles: Can You Crack the Wartime Codes? - Paperback

The Central Intelligence Agency: A Documentary History - Paperback

Codes and Ciphers - A History of Cryptography - Paperback

Flight: The Complete History of Aviation - Hardcover

Codes and Ciphers - A History of Cryptography - Hardcover

System Of Logic And History Of Logical Doctrines (1871) - Paperback

The Last Crypt: Discover the truth. Rewrite History. - Paperback

Npic: Seeing the Secrets and Growing the Leaders: A Cultural History of the National Photographic Interpretation Center - Paperback

World War II Cryptography: The History of the Efforts to Crack the Secret Codes Used by the Axis and Allies - Paperback

The History of the Aztecs & Maya: The History, Legend, Myth and Culture of the Ancient Native Peoples of Mexico and Central America; Olmec, Maya, Chic - Hardcover

Franco's Crypt - Paperback