More or Less Elementary Works
Boyer, John Q. “The Cryptogram” in Real Puzzles by John Q. Boyer, Rufus T. Strohm and George H. Pryor, pp. 147-154. Baltimore, 1925. (Simple substitution ciphers only.)
Buranelli, Prosper, Margaret Petherbridge and F. Gregory Hartswick. The Cryptogram Book. New York, 1928. (Simple substitution ciphers only.)
Hitt, Parker (Colonel). The A B C of Secret Writing. New York, 1935.
Lysing, Henry, pseud. (John Leonard Nanovic). Secret Writing. New York, 1936.
—. The Cryptogram Book. New York, 1937.
Mansfield, Louis C. S. The Solution of Codes and Ciphers. London, 1936.
—. One Hundred Problems in Cipher. London, 1936.
Ohaver, M. E. Cryptogram Solving. Columbus, Ohio, 1933, (Simple substitution ciphers only.)
Thomas, Paul B. Secret Messages. New York and London, 1928. 2nd printing, 1929.
Windolph, J. Fred (“Phil Down”). “Cryptograms: Their Construction and Solution” in A Key to Puzzledom, pp. 53-64. New York, 1906. (Simple substitution ciphers only.)
Yardley, Herbert Osborne (Major). Yardleygrams. Indianapolis, 1932. (The London edition (1932) bears the title Ciphergrams.)