Cite

Frank's map of the city of Duluth, Minnesota, 1902 / engraved, printed, &c. by G. Wm. Baist.

MLA

Frank, C. P. Frank's Map of the City of Duluth, Minnesota, 1902 / Engraved, Printed, &c. by G. Wm. Baist. G. Wm. Baist, 0AD. https://collections.library.yale.edu/catalog/15814581.

APA, 6th edition

Frank, C. P. (0 C.E.). Frank's map of the city of Duluth, Minnesota, 1902 / engraved, printed, &c. by G. Wm. Baist. [Maps]. G. Wm. Baist, https://collections.library.yale.edu/catalog/15814581.