A photograph taken by the Signal Corps in 1919 shows a scene in the base censor's office during World War One. In the image, letters suspected of carrying hidden messages are being subjected to a chemical bath to reveal any hidden information. This process was a part of the American Expeditionary Forces' efforts to maintain security. The photo was taken on January 2, 1919.

GLIX-115-2RBWX9R

A photograph taken by the Signal Corps in 1919 shows a scene in the base censor's office during World War One. In the image, letters suspected of carrying hidden messages are being subjected to a chemical bath to reveal any hidden information. This process was a part of the American Expeditionary Forces' efforts to maintain security. The photo was taken on January 2, 1919.
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Magyarország
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GLIX Prime

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Fotós / Szerző

piemags/NSC

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A photograph taken by the Signal Corps in 1919 shows a scene in the base censor's office during World War One. In the image, letters suspected of carrying hidden messages are being subjected to a chemical bath to reveal any hidden information. This process was a part of the American Expeditionary Forces' efforts to maintain security. The photo was taken on January 2, 1919.

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