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^Real Estate Record and Builders' Guide. F. W. Dodge Corporation. 1904-01-01 (英语).
^James Blaine Walker, Fifty Years of Rapid Transit, 1864-1917 (页面存档备份,存于互联网档案馆), published 1918, pp. 162-191
^New York City subway opens - Oct 27, 1904. HISTORY.com. 1904-10-27 [2015-10-25]. (原始内容存档于2010-03-07).
^Subway On East Side Will Be Opened Soon: New Switching Station on West Side Nearly ready, too Football Trains On Today. New York Times. November 12, 1904 [19 August 2015]. (原始内容存档于2017-04-11).
^New York Times, Farthest North in Town by the Interborough (页面存档备份,存于互联网档案馆), January 14, 1907, page 18
^Express to 221st Street: Will Run In the Subway To-day–New 181st Street Station Ready.. [2016-09-01]. (原始内容存档于2016-09-14).
^Report for the three and one-half years ending June 30, 1949.. New York City Board of Transportation. 1949.
^MORE LONG PLATFORMS; Five Subway Stations on IRT to Accommodate 10-Car Trains. The New York Times. 1948-07-10 [2016-03-27]. ISSN 0362-4331. (原始内容存档于2016-04-08).