The Zimmermann telegram of January 16, 1917
Subtitle: and its cryptographic background.
By: Prepared under the direction of the Chief Signal Officer by William F. Friedman and Charles J. Mendelsohn.
Contributors: Mendelsohn, Charles Jastrow, 1880-1939, joint author.; United States. Army. Signal Corps.
Publisher: U.S. Govt. Print. Off.
Published: 1938
Place of publication: Washington
Language: eng
Number of pages: 33
Subjects: Zimmermann, Arthur, 1864-1940.; World War, 1914-1918 -- Causes.
Description: https://www.nsa.gov/portals/75/documents/news-features/declassified-documents/friedman-documents/lectures-speeches/FOLDER_198/41766889080599.pdf
Notes: Bibliographical footnotes.
At head of title: War Dept., Office of the Chief Signal Officer.