"Restoring South Ferry Station". mta.info. Metropolitan Transportation Authority. November 28, 2012. Archived from the original on June 5, 2016. Retrieved June 15, 2016.
"Noteworthy – 9 Discontinued". mta.info. Metropolitan Transportation Authority. May 7, 2005. Archived from the original on May 7, 2005. Retrieved September 18, 2016.
"50,000 Persons Use New Tube On First Day: Clark Street Tunnel of the West Side Subway Cuts Down the Congestion of Traffic From Brooklyn". New-York Tribune. April 16, 1919. p. 11. ISSN1941-0646. ProQuest576071281.
"Blast Opens New Tube: South Tunnel of Old Slip-Clark Street Subway Now Clear for Tracking". New-York Tribune. December 20, 1916. p. 18. ISSN1941-0646. ProQuest575661566.
"Noteworthy – 9 Discontinued". mta.info. Metropolitan Transportation Authority. May 7, 2005. Archived from the original on May 7, 2005. Retrieved September 18, 2016.
"Restoring South Ferry Station". mta.info. Metropolitan Transportation Authority. November 28, 2012. Archived from the original on June 5, 2016. Retrieved June 15, 2016.
"50,000 Persons Use New Tube On First Day: Clark Street Tunnel of the West Side Subway Cuts Down the Congestion of Traffic From Brooklyn". New-York Tribune. April 16, 1919. p. 11. ISSN1941-0646. ProQuest576071281.
"Blast Opens New Tube: South Tunnel of Old Slip-Clark Street Subway Now Clear for Tracking". New-York Tribune. December 20, 1916. p. 18. ISSN1941-0646. ProQuest575661566.