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

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