IRT Brooklyn Line Opened 90 Years Ago. New York Division Bulletin (New York Division, Electric Railroaders' Association). September 2010, 53 (9) [2016-08-31]. (原始内容存档于2020-11-16) –通过Issu.
IRT Brooklyn Line Opened 90 Years Ago. New York Division Bulletin (New York Division, Electric Railroaders' Association). September 2010, 53 (9) [2016-08-31]. (原始内容存档于2020-11-16) –通过Issu.
New York Subway 1948 Map. New York City Board of Transportation. 1948 [July 17, 2019]. (原始内容存档于2022-04-05) –通过nycsubway.org.