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