Brooklyn: Brookly College Press, 1943. Revised Edition. Original wrappers. 4to. 16 lessons, complete in three volumes plus Appendix volume. Various paginations. Prepared by Prof. J.M. Wolfe of the Mathematics Department of Brooklyn College. Includes a separately issued Appendix that is comprised of miscellaneous articles, classifications of monographic plaintext idiomorphs, and a two-page “Brief Bibliography of Works in English. Mimeographed on rectos only. Tables; Diagrams. Orignal printed wrappers. Some age toning to covers; minor wear to extremities & to spine of volume 1; minor foxing else a near fine set. Item #17580
Complete three-volume World War II-era textbook on cryptanalysis from simple substitution to Hill’s algebraic transformations and four quadrant matrix diagraphic substitution. Wolfe’s text thoroughly analyzes transposition and substitution ciphers including the “Porta,” “Vigenere,” and “Beaufort” systems, the “Nihilist Substitution,” and the “Playfair Cipher.”.