Fun with Secret Writing (Dover Children's Activity Books)
4.95
USD
Book Details
Author(s)
Geoffrey Lamb
Publisher
Dover Publications
ISBN / ASIN
0486420981
ISBN-13
9780486420981
Sales Rank
#3,668,773
Category
Games
Marketplace
United States 🇺🇸
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Description
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.
