The history of codes and ciphers in the United States prior to World War I
By: edited by Wayne G. Barker.
Contributors: Barker, Wayne G.; United States. Army Security Agency. Historical Section.
Series: A cryptographic series ;; 20
Publisher: Aegean Park Press
Published: 1979
Place of publication: Laguna Hills, Calif
Language: eng
Number of pages: 159
Subjects: Cryptography -- United States -- History.
Notes: Includes bibliographical references and index.
Prepared in 1946 by the Historical Sectio of the Army Security Agency, Washington, D.C.