Masked dispatches
Subtitle: cryptograms and cryptology in American history, 1775-1900
By: Ralph E. Weber.
Contributors: United States. National Security Agency/Central Security Service. Center for Cryptologic History.
Series: United States cryptologic history.; v. 1
Publisher: Center for Cryptologic History, National Security Agency
Published: 1993
Place of publication: Fort George G. Meade, MD
Language: eng
Number of pages: 236
Subjects: Cryptography -- United States -- History -- To 1900.
Notes: Includes bibliographical references (p. 233-236).