Main telephone operating room in the Ordinance Building, Philadelphia, Pennsylvania, during World War One. This room was specifically used for official communication within the Eastern Department. The photo depicts CPL. Steiniger handling the telephone system on February 13, 1919.

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Size: 8525px × 5832px
Photo credit: © piemags/NSC / Alamy / Afripics
License: Licensed
Model Released: No

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