Photograph of the Chief Signal Offices of the Army in Washington, The image shows a wave coil being tested in different positions. The photo was taken on June 29, 1920, by RECO. The description states that the photo is of the Chief Signal Officer, , in Washington, , and it is marked as confidential. The image is labeled with the identification number 068463 and the notation "ISSUEDI C A."

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Size: 8495px × 5781px
Photo credit: © piemags/NSC / Alamy / Afripics
License: Licensed
Model Released: No

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