Metuchen, NJ, Scarecrow Press, 1994. B959i Codebreaking and Signals Intelligence . Totawa, NJ, Frank Cass, 1986. 355.3432 C669 Costello, John. New York, Pocket Books, 1994.
Book call no.
Codebreaking and the War Against Japan, 1942-1945 . Lawrence, KS, University Press of Kansas, 1991. D771m Deavours, Cipher A. and Kruh, Louis. Machine Cryptography and Modern Cryptanalysis . British Special Forces in North Africa, 1940-1943 .