Instructions for using cipher device, type M-94.

[Cipher books for use by Signal Office].
Published: (1874)

Policy of War Department in regard to use of codes and ciphers.
Published: (1921)

Use of cipher code.
Published: (1919)

Dates of cipher telegrams.
Published: (1912)

[Notice of tables of cipher words for amount, kind, and direction of clouds].
Published: (1874)

Codes and ciphers : Julius Caesar, the Enigma, and the internet /
by: Churchhouse, R. F.
Published: (2002)

Applied communications : Part I. General principles, message centers, codes, ciphers.
Published: (1922)

[Telegraphic cipher terms used for reports of water level at New Orleans, La. station].
Published: (1875)

[Telegraphic cipher terms used for reports of water level at New Orleans, La. station].
Published: (1875)

[Telegraphic cipher terms used for reports of water level at New Orleans, La. station].
Published: (1874)

Signal Corps : Code practice equipment, type EE-81.
Published: (1930)

[Document not titled.].
Published: (1912)

[Document not titled.].
Published: (1928)

General Service Code.
Published: (1918)

Elements of cryptanalysis.
Published: (1923)

[Document not titled.].
Published: (1929)

[Document not titled.].
Published: (1928)

[Telegraphic cipher terms used for reports of river water levels].
Published: (1874)

Synopsis of signal systems based upon dot and dash and 2-arm semaphore codes.
Published: (1917)

[Instructions for encrypting and sending telegraph messages].
Published: (1900)

[Instructions for use of Western Union telegraph code to and from Puerto Rico].
Published: (1899)

[Reporting instructions on personnel trained in Army and Navy code].
Published: (1900)

Addendum No. 3 (Instructions for transmission of messages by wireless telegraphy).
Published: (1905)

Use of Navy code E-3 on Army transports.
Published: (1922)

Call letters of vessels in Atlantic.
Published: (1910)

Ships' distinguishing pennants, based on Morse code.
Published: (1913)

[List of rulings and decisions of Adjutant General's Office].
Published: (1892)

Use of telegraph code.
Published: (1927)

[Request for information on location of telegraph code books].
Published: (1903)

Telegraphic code to insure secrecy in transmission of telegrams, revised and adapted for special use from publication of Robert Slater.
Published: (1885)

Telegraphic dictionary, Navy of U.S.
Published: (1848)

Transmission of telegrams for U.S. Shipping Board.
Published: (1919)

Telegraphic dictionary.
Published: (1812)

[Document not titled.].
Published: (1912)

Preliminary War Department telegraphic code, supplemental to and to be inserted as an appendix to Western Union telegraphic code.
Published: (1899)

Correction to Western Union telegraph code, universal edition.
Published: (1917)