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1. French Secret Code in POW Correspondence

Notes:: German censors in prison camps always had to remain vigilant regarding the passage of secret messages in POW mail. Censors intercepted this French letter which experts deciphered.
Date Created:: 1918-01-01T00:00:00Z
Data Provider:: Western Michigan University. Libraries

2. Secret Writing Sample

Notes:: This is a photograph of the original letter, written in French; when exposed to certain chemicals, a secret message appeared. The Germans discovered the letter and were able to expose the secret message.
Date Created:: 1918-01-01T00:00:00Z
Data Provider:: Western Michigan University. Libraries

3. German Translation of French Secret Code

Notes:: Translation into German of the secret message found in a French prisoner's mail. The Allies used secret codes and chemicals to conceal messages in POW correspondence.
Date Created:: 1918-01-01T00:00:00Z
Data Provider:: Western Michigan University. Libraries

4. French Secret Code Groups

Notes:: The Allies used these groups of letters as the basis for their secret correspondence with a French prisoner in a German prison camp.
Date Created:: 1918-01-01T00:00:00Z
Data Provider:: Western Michigan University. Libraries