11) Insull’s notes Meadowcroft Box, #68.H. TAE Memo, 1888
W.
9) One his first estimates the yearly cost running the
West Orange laboratory was:
1) Interest Investment (opportunity costs an
investment 184,000 5%) $9,200
2) Insurance $1,100
3) Depreciation 9,200
4) Supplies 7,000
5) Labor costs 62,000
This makes total yearly operating costs $88,900.
5) Edison’s Menlo Park laboratory described Robert
Friedel and Paul Israel, Edison* Electric Light (New
Brunswick: Rutgers University Press, 1986)pp. The data available for 1890 shows that the year’s
experimental work was billed about $80,000, showing that
Edison’s estimate operating costs was fairly accurate.O.
8) TAE note Edison Electric Light Co, July 1887, Conot,
p. July 1901, Letter Book (LB)
100521, 435. Nov 1888, 1888 Phono Gen. 246. July 1901, 100521, p.
14) Draft Agreement with Villard, 1888 W.
15) TAE Review Reviews, Oct 1910, 100829, 277.
4) Batchelor Diary, 1336, Sept 1887, pp.
.
16) Article Munsey's Magazine.
3) TAE Ore Milling Syndicate, Feb 1901, 000608.
10) TAE E.0.ENDNOTES FOR CHAPTER TWO
1) Article Munsey’s Magazine.
7) Bank records Drexel, Morgan, E2530, 182. Henceforth letterbooks will cited LB
number then page number.
2) TAE Hood Wright, Nov 1887, N871115.
13) Eaton Lewis Tate, June 1889, Miller file 121.
435.
12) Bill Book #3, pp. 277-278. Johnson, undated, 1888 Phono General. Lab. 30-38
6) Orange Herald. 394, 397. Lab General
