Fred Chesson's (aka TRIODE's)
SECRET WIRES...Telegraphs and Ciphers of the Civil War
Code Breaking and Secret Weapons in World War II
U.S. Naval Cryptologic Veterans Association
Electronic Cipher Machine (EMC) Mark II
SSEM simulator (the Manchester Baby)
The Chinese "Gold Bar" ciphers
Kassovic's Crypto Site (Enigma, ...)
Tunny: the Lorenz SZ42 cipher attachment
Leary's proof that Bacon wrote Shakespeare
Beale cipher info and freeware