Elements Cryptanalysis Training Pamphlet Prepared by Friedman William (2 results)

Paperback. Condition: Good. Trade PB. 8vo. Published by U. S. Government Printing Office, Washington, D. C. , 1923. Vii, 157 pgs. Wrappers heavily worn with shelf-wear to the extremities present (edges have been reinforced with period cello tape). Stamped with the Date and Office of Commander Yangtze Patrol Forces, USS Isabel, US Asiatic Fleet to the front wrap. Text is clean and free of marks. Binding tight and solid. The publication was largely the early work of William F. Friedman, who let the Signals Intelligence Service, predecessor of the National Security Agency. Friedman was inducted into the Military Intelligence Hall of Fame and received medals under presidents Truman and Eisenhower. Friedman coined several terms, including "cryptanalysis", and wrote many monographs on cryptography. One of these (written mostly in his spare time) was the first draft of his Elements of cryptanalysis, which later was expanded to four volumes and became the U. S. Army's cryptographic main textbook and reference. ; 8vo 8" - 9" tall.

Hardcover. Condition: Very Good. First edition. Octavo, bound in tan cloth with black lettering on the spine. Soiling/darkening on fore edge, pencil notations on rear endpage, else very good. ; 157 pages.