National geographic image collection Stock Photos and Images
RM2P0XWK7–National Geographic Society. Anniversary of Bell Telephone. Front: Theodore Newton Vail And Alexander Graham Bell; Back of Bell, Thomas Augustus Watson, Assoc. with Bell in Experiments. Diagonally Upward, Right: John .J. Carty; G.H. Grosvenor; J.O. Lagorce, 1916.
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