Secret Writing Codes And Messages
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Writing Secret Codes and Sending Hidden Messages
Author: Gyles Daubeney Brandreth
language: en
Publisher: Sterling Publishing (NY)
Release Date: 1984
Explains how to use secret codes, including Morse, Caesar's, Sandwich, Rosicrucian, and others, as well as how to send hidden messages using invisible ink, how to take fingerprints, and other tricks and techniques.
Codes, Ciphers and Secret Writing
Author: Martin Gardner
language: en
Publisher: Courier Corporation
Release Date: 1984-01-01
Explains various methods used in cryptography and presents examples to help readers in breaking secret codes