Interior view of an operation telephone set for a Monocord switchboard. Taken on October 10, 1918 by Sergeant Mace of the Research and Inspection Division in Paris, France. The photograph is designated as subject number 31154 and was received on December 18, 1918. It was held by the Censor until December 25, 1918.

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Size: 8434px × 5695px
Photo credit: © piemags/NSC / Alamy / Afripics
License: Licensed
Model Released: No

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