Cite

Map of the city of Saint Paul : capital of Minnesota / compiled by George C. Nichols.

MLA

Nichols, George C. Map of the City of Saint Paul : Capital of Minnesota / Compiled by George C. Nichols. s.n., 185AD. https://collections.library.yale.edu/catalog/15814592.

APA, 6th edition

Nichols, G. C. (185 C.E.). Map of the city of Saint Paul : capital of Minnesota / compiled by George C. Nichols. [Maps]. s.n., https://collections.library.yale.edu/catalog/15814592.