Secret messages concealment, codes, and other types of ingenious communication

Main Author:	Butler, William S.
Other Authors:	Keeney, L. Douglas.
Format:	Books Print Book
Language:	English
Published:	New York : Simon & Schuster, c2001.
Subjects:	Cryptography > Young adult nonfiction. Ciphers > Young adult nonfiction.

Physical Description:	192 p. : ill. ; 22 cm.
Bibliography:	Includes bibliographical references (p. 179-181) and index.
ISBN:	0684869985
Author Notes:	William S. Butler & L. Douglas Keeney have been a writing team for many years. Between them, they have authored more than a dozen books, many of them collaboratively. Their recent titles include This Is Guadalcanal; D-Day: Day of Destiny; No Easy Days; and Tragedy at Sea. They are both natives of and reside in Louisville, Kentucky, with their families.