"IRT Brooklyn Line Opened 90 Years Ago". New York Division Bulletin. 53 (9). New York Division, Electric Railroaders' Association. September 2010. Retrieved August 31, 2016 – via Issuu.
loc.gov
tile.loc.gov
Hood, Clifton (1978). "The Impact of the IRT in New York City"(PDF). Historic American Engineering Record. pp. 146–207 (PDF pp. 147–208). Archived(PDF) from the original on January 17, 2021. Retrieved December 20, 2020. This article incorporates text from this source, which is in the public domain.{{cite web}}: CS1 maint: postscript (link)
"Transit Relief Big Stimulus". The Brooklyn Citizen. April 13, 1913. pp. 13, 14. Archived from the original on May 22, 2023. Retrieved May 21, 2023 – via newspapers.com.
Hood, Clifton (1978). "The Impact of the IRT in New York City"(PDF). Historic American Engineering Record. pp. 146–207 (PDF pp. 147–208). Archived(PDF) from the original on January 17, 2021. Retrieved December 20, 2020. This article incorporates text from this source, which is in the public domain.{{cite web}}: CS1 maint: postscript (link)
"Transit Relief Big Stimulus". The Brooklyn Citizen. April 13, 1913. pp. 13, 14. Archived from the original on May 22, 2023. Retrieved May 21, 2023 – via newspapers.com.