How to write codes and send secret messages, by John Peterson. Illustrated by Bernice Myers.

By: Peterson, John Lawrence, 1924-Contributor(s): Myers, Bernice [illus.]Material type: TextTextReference number: 68027278 /ACPublication details: New York, Four Winds Press [1970] Description: 64 p. col. illus. 18 x 23 cmSubject(s): Ciphers -- Juvenile literature | CiphersDDC classification: 652.8 LOC classification: PZ10.P447 | HoSummary: Explains how to write and decipher space codes, hidden word codes, and alphabet codes and gives formulas for invisible ink. Includes suggestions for delivering coded messages.
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Item type Current library Class number Copy number Status Date due Barcode Item reservations
Book Book Green Library General Shelves 652.8 PET (Browse shelf(Opens below)) 1 Available 50000000132018
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Explains how to write and decipher space codes, hidden word codes, and alphabet codes and gives formulas for invisible ink. Includes suggestions for delivering coded messages.

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