Object Details Author Churchhouse, R. F Contents 1. Introduction -- 2. From Julius Caesar to simple substitution -- 3. Polyalphabetic systems -- 4. Jigsaw ciphers -- 5. Two-letter ciphers -- 6. Codes ...

A guide to codes and signals : international flag code, secret ciphers, weather signals, morse code, sign language, etc., with flags of all nations / by Gordon A.J. Petersen and Marshall McClintock ...

To lend a European flair, however, Lady Eaton commissioned French architect and designer Jacques Carlu (along with Eaton’s ...