From Sixteenth-Century Cryptography to the New Millennium — The Last 500 Years - Codes: The Guide to Secrecy from Ancient to Modern Times - page 72

Figure 2.8: Confederate cipher.
Courtesy of the National Security Agency Public Photo Gallery.
See http://www.nsa.gov/gallery/photo/photo00020.jpg .
Figure 2.9: Confederate cipher disk.
Courtesy of the Confederate Secret Service Camp 1710.
See http://home.earthlink.net/˜ cssscv/index.html .
Original on display at the NSA museum at Fort Meade, MD.