Alexander Graham Bell Demonstrates Telephone for Joseph Henry's Family
- Henry, Joseph 1797-1878
- Bell, Alexander Graham 1847-1922
- Henry, Caroline 1839-1920
- Henry, Helen Louisa 1836-1912
- Henry, Mary Anna 1834-1903
- Philosophical Society of Washington
- Centennial Exhibition (1876 : Philadelphia, Pa.)
- Chronology of Smithsonian History
- Cyanotype photograph of Alexander Graham Bell, c. 1880s. Smithsonian Institution Archives, negative number SIA2012-1089.
- Robert Bruce, Bell: Alexander Graham Bell and the Conquest of Solitude. Boston: Little, Brown, and Company, 1973, pp. 174, 214.
- Alexander Graham Bell demonstrates his telephone for Secretary Joseph Henry and his daughters at the Smithsonian, and at a meeting of the Philosophical Society of Washington that evening. Bell's first telephone patent had been issued on March 7, 1876, and a month later, Bell transmitted the first intelligible human speech over the telephone. As a judge for the 1876 Centennial Exposition in Philadelphia, Henry submit a report praising Bell's invention. Bell's second patent, covering the "box" phone as transmitter and receiver that he demonstrates during his visit to Washington, would be issued January 30, 1877.
- Contact information
- Institutional History Division, Smithsonian Institution Archives, 600 Maryland Avenue, SW, Washington, D.C. 20024-2520, SIHistory@si.edu
- January 13, 1877
- Smithsonian Archives - History Div
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