American soldier operating an automatic screw machine at Henry Disston and Sons in Philadelphia, PA, to produce the nuts for trench knives during World War One. This photograph was taken on November 29, 1918. It was cleared by the censor on December 2, 1918.

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Size: 8391px × 5637px
Photo credit: © piemags/NSC / Alamy / Afripics
License: Licensed
Model Released: No

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