MLA

Semple, Charles C. Original Townsite of Caddo, Okla. and Additions / Chas. C. Semple, Surveyor. [Oklahoma Immigration Company?], 0AD. https://collections.library.yale.edu/catalog/16388930.

APA, 6th edition

Semple, C. C. (0 C.E.). Original townsite of Caddo, Okla. and additions / Chas. C. Semple, surveyor. [Cadastral maps]. [Oklahoma Immigration Company?], https://collections.library.yale.edu/catalog/16388930.