Cite

New map of the American overland route : showing its connections, and land grants of 30,000,000 acres / engraved and published by Rand McNally & Co.

MLA

McNally, Rand, and Company. New Map of the American Overland Route : Showing Its Connections, and Land Grants of 30,000,000 Acres / Engraved and Published by Rand McNally & Co. Rand, McNally & Co., 0AD. https://collections.library.yale.edu/catalog/15827810.

APA, 6th edition

McNally, R., & C. (0 C.E.). New map of the American overland route : showing its connections, and land grants of 30,000,000 acres / engraved and published by Rand McNally & Co. [Maps]. Rand, McNally & Co., https://collections.library.yale.edu/catalog/15827810.