Bell Telephone Company companies and to provide further funds for expansion of its overall telephone infrastructure. On April 17, 1880, National Bell was split into the American Bell Telephone Company, led by Theodore Vail as general manager, and with the International Bell Telephone Company (IBTC) as a holding company for its international subsidiaries. IBTC's first non-North American subsidiary was the Bell Telephone Manufacturing Company (BTM), established by Hubbard at Antwerp, Belgium, in 1882. The Bell System's Bell Telephone Company of Canada subsidiary, wholly owned by the National Bell, had been established two years earlier. Alexander Graham Bell's ten shares of Bell Telephone Company
Alexander Graham Bell National Historic Site kites, planes and high speed boats. The museum also features displays relating to Bell's work with the deaf and how it led to the invention of the telephone. In addition to its displays, the museum features an observation deck on the roof of the building which offers a view of Alexander Graham Bell's Beinn Bhreagh estate, across the Bay. Beinn Bhreagh is a separate National Historic Site, still owned and occupied by Bell descendants. The museum was designed by renowned British Architect O.Howard Leicester R.I.B.A. It is not in the national park system and not open to the public. For