Parkinson, Tom; Fisher, Ian (1996). Rail Transit Capacity. Transportation Research Board. p. 98. ISBN9780309057189. Archived from the original on March 27, 2019. Retrieved January 20, 2019.
"September 10, 2003/Calendar No.22"(PDF). citylaw.org. New York City Planning Commission. September 10, 2003. p. 8. Archived(PDF) from the original on January 21, 2019. Retrieved January 1, 2019.
Sprague, J. L.; Cunningham, J. J. (2013). "A Frank Sprague Triumph: The Electrification of Grand Central Terminal [History]". IEEE Power and Energy Magazine. 11 (1). Institute of Electrical and Electronics Engineers (IEEE): 58–76. doi:10.1109/mpe.2012.2222293. ISSN1540-7977. S2CID6729668.
"Grand Central Terminal Is 100 Years Old". The Bulletin. 56 (3). Electric Railroaders' Association: 5. March 2013. Archived from the original on July 19, 2022. Retrieved January 20, 2019 – via Issu.
"2015–2019 MTA Capital Program"(PDF). mta.info. Metropolitan Transportation Authority. September 24, 2014. pp. 100–101. Archived(PDF) from the original on October 3, 2019. Retrieved October 3, 2019.
"MTA Capital Program 2020–2024". mta.info. Metropolitan Transportation Authority. September 16, 2019. Archived from the original on January 6, 2021. Retrieved October 3, 2019.
"Way Ahead"(PDF). mta.info. Metropolitan Transportation Authority. May 2019. Archived(PDF) from the original on October 3, 2019. Retrieved October 3, 2019.
"The Fourth Avenue Improvement". New York Daily Herald. January 11, 1873. Archived from the original on January 21, 2019. Retrieved December 31, 2018 – via newspapers.com.
"The Fourth Avenue Improvement". New York Daily Herald. June 6, 1874. Archived from the original on January 21, 2019. Retrieved December 31, 2018 – via newspapers.com.
"Who Is Responsible!". The New York Times. January 7, 1876. ISSN0362-4331. Archived from the original on January 21, 2019. Retrieved December 31, 2018 – via newspapers.com.
"The Underground Vanderbilt Road". The New York Sun. May 14, 1876. Archived from the original on January 21, 2019. Retrieved December 31, 2018 – via newspapers.com.
"Another Underground Railroad". Poughkeepsie Eagle-News. June 30, 1880. Archived from the original on January 21, 2019. Retrieved December 31, 2018 – via newspapers.com.
"A Great Drawbridge". The New York Times. February 14, 1894. ISSN0362-4331. Archived from the original on January 21, 2019. Retrieved December 31, 2018 – via newspapers.com.
"New York Central Can Close Station". The Evening World. New York. May 18, 1906. Archived from the original on December 27, 2018. Retrieved December 27, 2018 – via newspapers.com.
"Fifteen Killed, Thirty-Six Hurt". New-York Tribune. January 9, 1902. p. 1. Archived from the original on December 10, 2018. Retrieved December 10, 2018 – via newspapers.com.
"Electric Trains Soon". New-York Tribune. November 24, 1906. p. 12. Archived from the original on December 15, 2018. Retrieved December 13, 2018 – via newspapers.com.
"Grand Central Terminal Interior"(PDF). Landmarks Preservation Commission. September 23, 1980. Archived(PDF) from the original on December 8, 2017. Retrieved January 21, 2019.
Sprague, J. L.; Cunningham, J. J. (2013). "A Frank Sprague Triumph: The Electrification of Grand Central Terminal [History]". IEEE Power and Energy Magazine. 11 (1). Institute of Electrical and Electronics Engineers (IEEE): 58–76. doi:10.1109/mpe.2012.2222293. ISSN1540-7977. S2CID6729668.
Parkinson, Tom; Fisher, Ian (1996). Rail Transit Capacity. Transportation Research Board. p. 98. ISBN9780309057189. Archived from the original on March 27, 2019. Retrieved January 20, 2019.
"MTA Capital Program 2020–2024". mta.info. Metropolitan Transportation Authority. September 16, 2019. Archived from the original on January 6, 2021. Retrieved October 3, 2019.
"Grand Central Terminal Interior"(PDF). Landmarks Preservation Commission. September 23, 1980. Archived(PDF) from the original on December 8, 2017. Retrieved January 21, 2019.
"The Fourth Avenue Improvement". New York Daily Herald. January 11, 1873. Archived from the original on January 21, 2019. Retrieved December 31, 2018 – via newspapers.com.
"Grand Central Terminal Is 100 Years Old". The Bulletin. 56 (3). Electric Railroaders' Association: 5. March 2013. Archived from the original on July 19, 2022. Retrieved January 20, 2019 – via Issu.
"The Fourth Avenue Improvement". New York Daily Herald. June 6, 1874. Archived from the original on January 21, 2019. Retrieved December 31, 2018 – via newspapers.com.
"Who Is Responsible!". The New York Times. January 7, 1876. ISSN0362-4331. Archived from the original on January 21, 2019. Retrieved December 31, 2018 – via newspapers.com.
"The Underground Vanderbilt Road". The New York Sun. May 14, 1876. Archived from the original on January 21, 2019. Retrieved December 31, 2018 – via newspapers.com.
"Another Underground Railroad". Poughkeepsie Eagle-News. June 30, 1880. Archived from the original on January 21, 2019. Retrieved December 31, 2018 – via newspapers.com.
"A Great Drawbridge". The New York Times. February 14, 1894. ISSN0362-4331. Archived from the original on January 21, 2019. Retrieved December 31, 2018 – via newspapers.com.
"New York Central Can Close Station". The Evening World. New York. May 18, 1906. Archived from the original on December 27, 2018. Retrieved December 27, 2018 – via newspapers.com.
"Fifteen Killed, Thirty-Six Hurt". New-York Tribune. January 9, 1902. p. 1. Archived from the original on December 10, 2018. Retrieved December 10, 2018 – via newspapers.com.
"Electric Trains Soon". New-York Tribune. November 24, 1906. p. 12. Archived from the original on December 15, 2018. Retrieved December 13, 2018 – via newspapers.com.
"September 10, 2003/Calendar No.22"(PDF). citylaw.org. New York City Planning Commission. September 10, 2003. p. 8. Archived(PDF) from the original on January 21, 2019. Retrieved January 1, 2019.
"2015–2019 MTA Capital Program"(PDF). mta.info. Metropolitan Transportation Authority. September 24, 2014. pp. 100–101. Archived(PDF) from the original on October 3, 2019. Retrieved October 3, 2019.
"Way Ahead"(PDF). mta.info. Metropolitan Transportation Authority. May 2019. Archived(PDF) from the original on October 3, 2019. Retrieved October 3, 2019.
"Who Is Responsible!". The New York Times. January 7, 1876. ISSN0362-4331. Archived from the original on January 21, 2019. Retrieved December 31, 2018 – via newspapers.com.
"A Great Drawbridge". The New York Times. February 14, 1894. ISSN0362-4331. Archived from the original on January 21, 2019. Retrieved December 31, 2018 – via newspapers.com.
Sprague, J. L.; Cunningham, J. J. (2013). "A Frank Sprague Triumph: The Electrification of Grand Central Terminal [History]". IEEE Power and Energy Magazine. 11 (1). Institute of Electrical and Electronics Engineers (IEEE): 58–76. doi:10.1109/mpe.2012.2222293. ISSN1540-7977. S2CID6729668.