Fun With Secret Writing (Dover Children's Activity Books) - Softcover

Lamb, Geoffrey

 
9780486420981: Fun With Secret Writing (Dover Children's Activity Books)

Inhaltsangabe

Fascinating, easy-to-understand book for would-be cryptanalysts of all ages teaches how to invent and decipher a host of codes and secret messages, including the "Moving Ahead" cipher used by Julius Caesar; dots and pinpricks, as used by the secret Rosicrucian society; and even a system used by Sherlock Holmes. 14 black-and-white illustrations.

Die Inhaltsangabe kann sich auf eine andere Ausgabe dieses Titels beziehen.