Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The R6 was a New York City Subway car that was built in 1935 and 1936. The R6 contract had three separate orders from different manufacturers due to the large order. The R6 separate orders were R6-3 (American Car and Foundry Company), R6-2 (Pullman Standard), and R6-1 (Pressed Steel Company). The R6 fleets were almost identical to the R4s which preceded them, except that the R6 had a 2 pane front window compared to the R4's 1 pane window. The New York City Subway is a rapid transit system owned by the City of New York and leased to the New York City Transit Authority, a subsidiary agency of the Metropolitan Transportation Authority and also known as MTA New York City Transit. It is one of the oldest and most extensive public transportation systems in the world, with 468 stations in operation (423 if stations connected by transfers are counted as single stations); 209 mi (337 km) of routes, translating into 656 miles (1,056 km) of revenue track; and a total of 842 miles (1,355 km) including non-revenue trackage.

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