Power Generation
From nycsubway.org
Articles about power generation facilities for the New York Subway system.
Rotary Converter Power Technology
What is a Rotary Converter? A look at how rotary converter technology
works and how it was used in the New York subway system, by Bernard
S. Greenberg.
IRT Substation 21
A 1996 field trip to IRT Substation #21 in Brooklyn.
Other New York Transit Substations
Some photos of other substations around New York City Transit.
The Interborough Power Plant
Reports from the New York Times, Scientific American,
and Electric Railway Journal describing the construction,
outfitting, capabilities, and upgrades to the Interborugh's power
house.
The New York Subway: Its Construction and Equipment (1904)
This book includes a 1904 description of the IRT subway's power house, power plant, and system of electrical supply.