Mysterious Messages: A History of Codes and Ciphers by Gary L. Blackwood

Mysterious Messages: A History of Codes and Ciphers

Gary L. Blackwood

170 pages first pub 2009 (editions)

nonfiction childrens historical history informative fast-paced

Description

History?s amazing secrets and codes?and how to crack them yourself. This fascinating look at history?s most mysterious messages is packed with puzzles to decode and ciphers that kids can use themselves. Here are the encrypted notes of Spartan warr...

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