BEALE'S TREASURE
ENIGMA MACHINE 
nice site for historical ciphers
NATIONAL CRYPTOLOGIC MUSEUM 
EDGAR ALLEN POE'S-THE GOLD BUG 
the Poe Cipher Challenge
Poe's cipher has been solved
PUBLIC KEY CRYPTOGRAPHY
THE VOYNICH MANUSCRIPT 
THE DEATH OF MARY QUEEN OF SCOTS 
A SHORT HISTORY OF CRYPTOGRAPHY 
THE VENONA FILES 
PENN LEARY'S SITE 
SIR EDWARD ELGAR'S UNSOLVED CIPHER
ZODIAC CIPHERS AND LETTERS
CIA 'kryptos' CIPHER ARTICLE and
the cipher itself
BACONIAN CIPHERS..TERRY ROSS
THOMAS JEFFERSON'S WHEEL CIPHER
material on historical ciphers