Image showing the Electrical Laboratory at the Signal Corps School of Radio and Multiplex Telegraphy in New York. The photograph was taken on April 27, 1919, and indicates it was issued under Subject from The description states that it was intended for official use only.

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Size: 8596px × 5874px
Photo credit: © piemags/NSC / Alamy / Afripics
License: Licensed
Model Released: No

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