German Field Telephone Switchboard cord and key shelf showing wiring methods. Taken on December 13, 1918, in Paris, Seine, France. This photograph is part of the Research and Inspection Bureau collection. It is not for publication and is for official use only. Photograph taken by Sgt. Gallivan.

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Size: 8445px × 5681px
Photo credit: © piemags/NSC / Alamy / Afripics
License: Licensed
Model Released: No

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