MLA

Wilkes, Charles, 1798-1877. Map of the Oregon Territory / by the U.S. Ex. Ex., Charles Wilkes ... Commander, 1841 ; republished by James Wyld.. BRBL_00533. [1845?]. https://collections.library.yale.edu/catalog/15812919.

APA, 6th edition

Wilkes, Charles, 1798-1877. (["BRBL_00533"])([1845?])[Map of the Oregon Territory / by the U.S. Ex. Ex., Charles Wilkes ... Commander, 1841 ; republished by James Wyld.]. https://collections.library.yale.edu/catalog/15812919.