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