Cite

Historical map of Oklahoma / drawn by H.Z. Sanders.

MLA

Sanders, H. Z. Historical Map of Oklahoma / Drawn by H.Z. Sanders. Oklahoma Natural Gas Co., 0AD. https://collections.library.yale.edu/catalog/15827823.

APA, 6th edition

Sanders, H. Z. (0 C.E.). Historical map of Oklahoma / drawn by H.Z. Sanders. [Maps]. Oklahoma Natural Gas Co., https://collections.library.yale.edu/catalog/15827823.