EDISON LABORATORY Edison National Historic Site West Orange, New Jersey Volume 1

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, 1952. The laboratories were equipped carry out experiments physical, chemical and engineering research.532 530 E.laboratory were given former Edison employees under the supervision the corporation; tours given during the war were subject tight security and were required have police escort. 1952 had prosperous instrument division making electrical resistance bulbs, temperature indicators and thermal time delay relays. 533 "The New Laboratory," Thomas Edison, Inc. Eckert, March 26, 1943; Plan Action the Project Care for the Laboratory Group, Norman Speiden, June 28, 1939, and Norman Speiden W.631 The Edison family had long looked the West Orange laboratory museum to the memory Edison the inventor. Charles Edison Fund collections., Annual Report, 1953, the collections the Charles Edison Fund. The Director of Research was Dr. The dictating machine division successfully manufactured a range 'Voicewriter" equipment which included tape, cylinder, and disc recorders.534 The Edison Home National Historic Site became part of 159 . Ellwood Norman Speiden and notations, February 12, 1942; Report Mr.630 At the end World War II, Thomas Edison, Inc. Donald Collier. This Note summation memorandum from’ Superintendent Melvin J. . Brennan, May 23, 1944, Historical Research Dept. Weig James Whitehouse [Regional Director?], Northeast Region, NPS, November 13, 1967. After World War the laboratory was operated public use facility the Thomas Edison foundation which had a lease from the Edison Industries. Thomas Edison, Inc. 631 Annual Report, Thomas Edison, Inc. The staff and equipment which had been installed Building were transferred the new building February 1953633 In 1954 Charles Edison contacted the National Park Service for advice on preserving Glenmont; subsequent negotiations lead the donation Edison’s house the nation. In 1952, ground was broken for new laboratory Watchung Avenue, few hundred feet the south the old Phonograph Works. also provided control devices and instrumentation for the aircraft industry. 534 Historian’s Note 129. consisted nine laboratory rooms and nine offices. Building was converted museum use and opened the public 1948.A. stood ready apply the expertise had gained manufacturing war material and was eager join the military industrial complex.E. 532 NPS, "HSR, Physics Laboratory, Building 1," 10. made wide range batteries from heavy duty nickel iron storage batteries for railroad cars the battery that powered the light in coal miners’ caps