Members of the American military conducting final preparations for a free balloon flight. They are seen adjusting the instruments at the Polo Field in Washington, This specific image is numbered 58625 and was taken as part of a collection of photographs documenting balloon operations during World War I.

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Size: 8551px × 5778px
Photo credit: © piemags/NSC / Alamy / Afripics
License: Licensed
Model Released: No

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