Featuring anecdotes about famous cryptographers, a wide-ranging look at the use of secret code uses hundreds of illustrated examples and technical explanations to trace the history of coding and teach readers how send their own secret messages.
Fred B. Wrixon is an expert in codes, military history and espionage. He has written three books includingCodes, Ciphers and Secret Languages, Codes and Ciphers and 2440 Questions and Answers. He often spends his free time exchanging code deciphering puzzles with friends. He lives in the Ohio River Valley.