Cite

Mitchell's Map of Illinois Exhibiting its Internal Improvements, Counties, Towns, Roads &c.

MLA

Mitchell's Map of Illinois Exhibiting Its Internal Improvements, Counties, Towns, Roads &c. S. A. Mitchell, 1838. https://collections.library.yale.edu/catalog/15814395.

APA, 6th edition

Mitchell's Map of Illinois Exhibiting its Internal Improvements, Counties, Towns, Roads &c. (1838). [Maps]. S. A. Mitchell, https://collections.library.yale.edu/catalog/15814395.