Cite

Map showing the route of the Canada Southern Railway : and its connecting lines / prepared by G.W. & C.B. Colton & Co.

MLA

G. W., et al. Map Showing the Route of the Canada Southern Railway : and Its Connecting Lines / Prepared by G.W. & C.B. Colton & Co. G.W. & C.B. Colton & Co., 1871. https://collections.library.yale.edu/catalog/15603795.

APA, 6th edition

G. W., Colton, C. B., & C. (1871). Map showing the route of the Canada Southern Railway : and its connecting lines / prepared by G.W. & C.B. Colton & Co. [Maps]. G.W. & C.B. Colton & Co., https://collections.library.yale.edu/catalog/15603795.