Advanced Works
Friedman, William F. (Lt.-Colonel). Elements of Cryptanalysis. Washington, Gov. Printing Office, 1924. “For Offcial Use Only.” (Contains a bibliography. Out of print and unobtainable.)
—. See also Riverbank Publications.
Givierge, Marcel (General). Cours de Cryptographie. Paris, 1st edition, 1925, 2nd edition, 1932.
Hitt, Parker (Colonel). Manual for the Solution of Military Ciphers. Fort Leavenworth, Kans., 1st edition, 1916, 2nd edition, 1918.
Riverbank Publications. Papers (except No. 19) by W. F. Friedman. Department of Ciphers, Riverbank Laboratories, Geneva, Illinois.
No. 15, 1917. “A Method of Reconstructing the Primary Alphabet.”
No. 16, 1918. “Methods for the Solution of Running-key Ciphers.”
No. 17, 1918. “An Introduction to Methods for the Solution of Ciphers.”
No. 18, 1918. “Synoptic Tables for the Solution of Ciphers, and a Bibliography of Cipher Literature.”
No. 19, 1918. “Formulae for the Solution of Geometrical Transposition Ciphers,” by Captain Lenox R. Lohr, with an introduction by W. F. Friedman.
No. 20, 1918. “Several Machine Ciphers and Methods for Their Solution.”
No. 21, 1918. “Methods for the Reconstruction of Primary Alphabets.”
No. 22, 1922. “The Index of Coincidence and Its Applications in Cryptographic Analysis.”
Sacco, Luigi (General). Manuale di crittografia. Rome, 2nd edition, revised and enlarged, 1936. (The first edition was privately printed under the title Nozioni di crittografia. Rome, 1930.)
Zanotti, Mario. Crittografia. Milan, 1928.