Report for the three and one-half years ending June 30, 1949. New York City Board of Transportation. 1949. hdl:2027/mdp.39015023094926.
Report for the three and one-half years ending June 30, 1949. New York City Board of Transportation. 1949. hdl:2027/mdp.39015023094926.
Report including analysis of operations of the New York City transit system for five years, ended June 30, 1945. New York City: Board of Transportation of the City of New York. 1945. hdl:2027/mdp.39015020928621.
Report for the three and one-half years ending June 30, 1949. New York City Board of Transportation. 1949. hdl:2027/mdp.39015023094926.
"About NYC Transit – History". October 19, 2002. Archived from the original on October 19, 2002. Retrieved September 18, 2016.{{cite web}}: CS1 maint: bot: original URL status unknown (link)