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