Secret messages : concealment, codes, and other types of ingenious communication / by William S. Butler and L. Douglas Keeney
2001, First Edition. New York : Simon and Schuster. Fine cloth copy in an equally fine dw. Particularly and surprisingly well-preserved; tight, bright, clean and especially sharp-cornered. Literally as new.; 192 pages; Description: 192 p. : ill. ; 22 cm. Subjects: Cryptography --Ciphers. Summary: From the fall of Troy to.....