Edison carbon telephone: Wall-mounted model with 'pony-crown' receiver (right). Wood engraving, New York, 1879

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Photo credit: © Universal History Archive/UIG/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: 1879, carbon, communication, edison, engraving, model, pony-crown, receiver, telephone, telephony, wall-mounted, wood, york