Map of the city of New York showing the main line, branches & connections of the Beach Pneumatic Company's Broadway Underground Railway / prepared by G.W. & C.B. Colton & Co

Chicago citation style
G.W. & C.B. Colton & Co. Map of the city of New York showing the main line, branches & connections of the Beach Pneumatic Company's Broadway Underground Railway / prepared by G.W. & C.B. Colton & Co. 1873. Retrieved from the Digital Public Library of America, http://collections.lib.uwm.edu/cdm/ref/collection/agdm/id/6457. (Accessed May 26, 2020.)
APA citation style
G.W. & C.B. Colton & Co, (1873) Map of the city of New York showing the main line, branches & connections of the Beach Pneumatic Company's Broadway Underground Railway / prepared by G.W. & C.B. Colton & Co. Retrieved from the Digital Public Library of America, http://collections.lib.uwm.edu/cdm/ref/collection/agdm/id/6457
MLA citation style
G.W. & C.B. Colton & Co. Retrieved from the Digital Public Library of America <http://collections.lib.uwm.edu/cdm/ref/collection/agdm/id/6457>.
Note: These citations are programmatically generated and may be incomplete.