MLA

McNally, Rand, and Company. Official Rand McNally Detail Map of the Seattle World's Fair. Crane Gulbransen, Inc. [distributors],, Rand McNally ; 0AD. https://collections.library.yale.edu/catalog/15821668.

APA, 6th edition

McNally, R., & C. (0 C.E.). Official Rand McNally detail map of the Seattle World's Fair. [Tourist maps]. Crane Gulbransen, Inc. [distributors],, Rand McNally ; https://collections.library.yale.edu/catalog/15821668.