A soldier operates a humidifying machine during World War I. The machine, used by the Chemical Warfare Service, was designed to add moisture to the air in order to improve living and working conditions for military personnel. This particular photograph has the number 54869 and was received on April 2, 1919. The location is noted as St. Tae San 405, taken at 14:29.

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Size: 8486px × 5794px
Photo credit: © piemags/NSC / Alamy / Afripics
License: Licensed
Model Released: No

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