Cite

Railroad & township map of Ohio.

MLA

Ensign, Thayer, and Co. Railroad & Township Map of Ohio. Horace Thayer & Co., 1853. https://collections.library.yale.edu/catalog/15814341.

APA, 6th edition

Ensign, T., & C. (1853). Railroad & township map of Ohio. [Maps]. Horace Thayer & Co., https://collections.library.yale.edu/catalog/15814341.