277-278.
13) Eaton Lewis Tate, June 1889, Miller file 121. July 1901, 100521, p.O. Nov 1888, 1888 Phono Gen. TAE Memo, 1888
W.
4) Batchelor Diary, 1336, Sept 1887, pp.
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. July 1901, Letter Book (LB)
100521, 435.
.
11) Insull’s notes Meadowcroft Box, #68.
16) Article Munsey's Magazine.
2) TAE Hood Wright, Nov 1887, N871115. 246. Lab General. 394, 397.
12) Bill Book #3, pp.ENDNOTES FOR CHAPTER TWO
1) Article Munsey’s Magazine. 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.0. Lab.H.
7) Bank records Drexel, Morgan, E2530, 182. Henceforth letterbooks will cited LB
number then page number.
5) Edison’s Menlo Park laboratory described Robert
Friedel and Paul Israel, Edison* Electric Light (New
Brunswick: Rutgers University Press, 1986)pp. 30-38
6) Orange Herald.
8) TAE note Edison Electric Light Co, July 1887, Conot,
p.
15) TAE Review Reviews, Oct 1910, 100829, 277.
14) Draft Agreement with Villard, 1888 W.
3) TAE Ore Milling Syndicate, Feb 1901, 000608.
10) TAE E. Johnson, undated, 1888 Phono General.
435
