Creating and Cracking Codes

Records show that human beings have been using codes to conceal messages for over 2, years! This revealing book traces codes throughout history, from an encryption device used by the Spartans in 4 B.C. to the Enigma Code of the 194s, pausing to consider coded military secrets and newspaper scoops alike. Students will be delighted by code-cracking diagrams. Illuminating sidebars, primary source documents, and vivid illustrations all add to this attractive volume’s appeal.