worked for Thomas Edison in his laboratories at Menlo Park or West Orange or at the subsidiary electrical businesses that he supervised. Edward Goodrich Acheson – chemist, worked at Menlo Park 1880–1884 William Symes Andrews – started at the Menlo Park machine shop 1879 Charles Batchelor – "chief experimental assistant" John I. Beggs – manager of Edison Illuminating Company in New York, 1886 William Kennedy Dickson – joined Menlo Park in 1883, worked on the motion picture camera Justus B. Entz – joined Edison Machine Works in 1887 Reginald Fessenden – worked at the Edison Machine Works in 1886 Henry Ford – engineer Edison Illuminating Company Detroit, Michigan, 1891–1899 William Joseph Hammer – started as laboratory assistant Menlo Park in 1879 Miller Reese Hutchison – inventor of hearing aid Edward Hibberd Johnson – started in 1909, chief engineer at West Orange laboratory 1912–1918 Samuel Insull – started in 1881, rose to become VP of General Electric (1892) then President of Chicago Edison Kunihiko Iwadare – joined Edison Machine Works in 1887 Francis Jehl – laboratory assistant Menlo Park 1879–1882 Arthur E. Kennelly – engineer, experimentalist at West Orange laboratory 1887–1894 John Kruesi – started 1872, was head machinist, at Newark, Menlo Park, Edison Machine Works Lewis Howard Latimer – hired 1884 as a draftsman, continued working for General Electric John W. Lieb – worked at the Edison Machine Works in 1881 Thomas Commerford Martin – electrical engineer, worked at Menlo Park 1877–1879 George F. Morrison – started at Edison Lamp Works 1882 Edwin Stanton Porter – joined the Edison Manufacturing Company 1899 Frank J. Sprague – joined Menlo Park 1883, became known as the "Father of Electric Traction". Nikola Tesla – electrical engineer and inventor, worked at the Edison Machine Works in 1884 Francis Robbins Upton – mathematician/physicist, joined Menlo Park 1878 Theo Wangemann – personal assistant to Edison See also Edison Pioneers – a group formed in 1918 by employees and other associates of Thomas Edison Thomas Alva Edison Birthplace References Bibliography External links Museums Menlo Park Museum and Edison Memorial Tower Thomas Edison National Historical Park (National Park Service) Edison exhibit and Menlo Park Laboratory at Henry Ford Museum Edison Museum Edison Depot Museum Edison Birthplace Museum Thomas Edison House Information and media "An Hour with Edison", Scientific American, July 13, 1878, p. 17 Interview with Thomas Edison in 1931 The Diary of Thomas Edison Edison's patent application