Electrical engineer's pocket-book: a hand-book of useful data for electricians and electrical engineers (1901)
Foster, Horatio A. (Horatio Alvah), 1858-1913 · New York, D. Van Nostrand co.; London, E.& F.N. Spon, ltd. · leaf 542
FiG. 87. Trolley, Metropolitan West SideElevated Railway, Chicago, 1895. The use of an insulated railalongside of or between the railsof the regular track, for carryingthe current for the motors, wasone of the earliest forms used forelectric railroads ; but until itsuse on the Intramural Railwayat…
Electrical engineering
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