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“How To Make & Break Secret Messages” 1962 article Cryptography~Cipher Codes “How To Make & Break Secret Messages” 1962 article Cryptography~Cipher Codes
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Description “Here’s How You Can Make and Break Secret Messages”. Details on several methods of sending secret coded messages and several ways to break a code.
- Book Cipher
- Substitution Cipher
- Frequency Analysis
“Spy Secrets from U.S.Code Rooms”. Stories of the use of secret codes and the methods used to decipher them.
This is an original 2 part, 11 page magazine article from 1962
Pages measure 6 1/2" x 9".
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