Image showing the construction progress of the Signal Corps Laboratory at Washington Barracks, Washington The photograph was taken on May 26, 1919, by Capt. Holman of the The image is part of a weekly photographic report on the construction of the laboratory.

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Size: 8418px × 5703px
Photo credit: © piemags/NSC / Alamy / Afripics
License: Licensed
Model Released: No

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