"Rector Street Neighborhood Map". mta.info. Metropolitan Transportation Authority. April 2018. Archived from the original on August 29, 2021. Retrieved January 7, 2021.
The Dual System of Rapid Transit. New York State Public Service Commission. September 1912. Archived from the original on January 26, 2021. Retrieved May 30, 2017.
"7th Avenue Subway System Is Opened To Public To-day: First Train Will Start at 2 O'Clock This Afternoon". New-York Tribune. July 1, 1918. p. 9. ProQuest575909557.
"Transit Unification Completed As City Takes Over I. R. T. Lines: Systems Come Under Single Control After Efforts Begun in 1921; Mayor Is Jubilant at City Hall Ceremony Recalling 1904 Celebration". New York Herald Tribune. June 13, 1940. p. 25. ProQuest1248134780.
The Dual System of Rapid Transit. New York State Public Service Commission. September 1912. Archived from the original on January 26, 2021. Retrieved May 30, 2017.
"Rector Street Neighborhood Map". mta.info. Metropolitan Transportation Authority. April 2018. Archived from the original on August 29, 2021. Retrieved January 7, 2021.