This image, taken on December 21, 1918, features Sgt. Iel. Gallivan operating an Armstrong radio amplifier box No. 2. It was taken at the Research and Inspection Bureau of the Signal Corps in Paris, Seine, France. The image is labeled as not for publication and intended for official use only.

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Size: 8456px × 5695px
Photo credit: © piemags/NSC / Alamy / Afripics
License: Licensed
Model Released: No

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