|Location||1782 Third Avenue, New York, New York|
|Area||less than one acre|
|Architectural style||Beaux Arts|
|MPS||New York City Subway System MPS|
|NRHP Reference #||06000027|
|Added to NRHP||February 9, 2006|
Substation 7 is a traction substation located at 1782 Third Avenue at 99th Street on the Upper East Side of Manhattan. The Manhattan Railway Company built to electrify the Second, Third and Ninth Avenue elevated lines. It served as a power source for the IRT Lexington Avenue Line from 1918 until the 1970s. It originally converted 25 Hz AC power from the 74th Street power station, to DC for the electric motors. The substation is owned by the MTA and it is listed on the National Register of Historic Places.
- "National Register Information System". National Register of Historic Places. National Park Service. 2010-07-09.
- Pollak, Michael. "Answers to Questions About New York". New York Times. Retrieved 1 October 2013.
- Construction of the 74th Street Power Station Museum of the City of New York
- "National Register of Historic Places". National Register of Historic Places. Retrieved 1 October 2013.
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