"Photograph of Sgt. Marchall operating the Aero Morse recorder during World War One. The photo was taken in May 1918, and was issued with a note stating that it was not for publication. The recorder was an important tool used in military communication during the war."

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Size: 9177px × 6297px
Photo credit: © piemags/NSC / Alamy / Afripics
License: Licensed
Model Released: No

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