The American black chamber
By: by Herbert O. Yardley.
Series: Cryptographic series -- 52
Publisher: Aegean Park Press
Published: 1931
Place of publication: Laguna Hills, Calif
Language: eng
Number of pages: 375
Subjects: Cryptography.; Military intelligence.; Secret service -- United States.; World War, 1914-1918 -- Secret Service -- United States
Notes: "This is a quality reproduction, without changes, of The American Black Chamber as published in 1931."--verso t.p.