Telephone Exhibit Opens
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PrintSecretary Leonard Carmichael and Dr. Melville Bell Grosvenor, president of the National Geographic Society and grandson of Alexander Graham Bell, inaugurate the recently completed exhibition illustrating the invention and development of the modern telephone system.
Chronology of Smithsonian History
Annual Report of the Smithsonian Institution for the year 1957, p. 34
Institutional History Division, Smithsonian Institution Archives, 600 Maryland Avenue, S.W., Washington, D.C. 20024-2520, SIHistory@si.edu
March 11, 1957