• Created Date
  • January 13, 1877
  • Description
  • 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 ... more
    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. Institutional History Division, Smithsonian Institution Archives, 600 Maryland Avenue, SW, Washington, D.C. 20024-2520, SIHistory@si.edu. less