Caption: "Chemical Warfare Service Laboratory at Edgewood Arsenal, Maryland, depicted in a black and white photograph taken by Reco on February 10, 1921. The laboratory serves as a chemical plant, associated with the Filling Station. The image bears the description Symbol A and was issued by Hughes Co. on May 21, 1918."

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Size: 8456px × 5800px
Photo credit: © piemags/NSC / Alamy / Afripics
License: Licensed
Model Released: No

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