Cite

Map of the Wyoming oil fields.

MLA

Co, Clason Map. Map of the Wyoming Oil Fields. Clason Map Co., 0AD. https://collections.library.yale.edu/catalog/15818361.

APA, 6th edition

Co, C. M. (0 C.E.). Map of the Wyoming oil fields. [Maps]. Clason Map Co., https://collections.library.yale.edu/catalog/15818361.