Overview of Civil War Codes and Ciphers
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A Brief History of Naval Cryptanalysis
Confederate Cipher Disc
Union Army Cipher Disk- American Civil War flag telegraphy
Overview of Civil War Codes and Ciphers
Confederate Army Cipher Disk - Civil War Encryption Wheels
Code Breaker – The Rosenbach
The Pacific War Online Encyclopedia: Codes
Union Army Cipher Wheels - Civil War Encryption Device
Confederate Code Disc
Civil War. An Extremely Rare Union Cipher Book for Generals and, Lot #43485
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