MLA

A Map of the United States: Compiled Chiefly from the State Maps, and Other Authentic Information, by Saml. Lewis. Engraved for and sold by Matthew Carey, 1809. https://collections.library.yale.edu/catalog/15604141.

APA, 6th edition

A Map of the United States: compiled chiefly from the State Maps, and other Authentic Information, by Saml. Lewis. (1809). [Maps]. Engraved for and sold by Matthew Carey, https://collections.library.yale.edu/catalog/15604141.