A soldier is seen adjusting his gas mask, which is identified as the SUMBER 714 model. This photograph was captured in 1919 by a photographer from the Chemical Warfare Service. The image was taken in Washington, as part of an investigation or study conducted by the service.

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Size: 9182px × 6304px
Photo credit: © piemags/NSC / Alamy / Afripics
License: Licensed
Model Released: No

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