5) Edison’s Menlo Park laboratory described Robert
Friedel and Paul Israel, Edison* Electric Light (New
Brunswick: Rutgers University Press, 1986)pp.
11) Insull’s notes Meadowcroft Box, #68.
2) TAE Hood Wright, Nov 1887, N871115.H.
4) Batchelor Diary, 1336, Sept 1887, pp. July 1901, Letter Book (LB)
100521, 435. 277-278.O.
14) Draft Agreement with Villard, 1888 W. Johnson, undated, 1888 Phono General. 246.
8) TAE note Edison Electric Light Co, July 1887, Conot,
p.
435.0.
12) Bill Book #3, pp. 394, 397. July 1901, 100521, p. 30-38
6) Orange Herald. Henceforth letterbooks will cited LB
number then page number.
3) TAE Ore Milling Syndicate, Feb 1901, 000608.
.
13) Eaton Lewis Tate, June 1889, Miller file 121. Nov 1888, 1888 Phono Gen. TAE Memo, 1888
W.
7) Bank records Drexel, Morgan, E2530, 182.ENDNOTES FOR CHAPTER TWO
1) Article Munsey’s Magazine. Lab General.
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.
16) Article Munsey's Magazine.
15) TAE Review Reviews, Oct 1910, 100829, 277. 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.
10) TAE E. Lab
