Cite

Gallup's map of Texas.

MLA

Company, F. E. Gallup Map. Gallup's Map of Texas. F.E. Gallup Map Co., 0AD. https://collections.library.yale.edu/catalog/15811567.

APA, 6th edition

Company, F. E. G. M. (0 C.E.). Gallup's map of Texas. [Maps]. F.E. Gallup Map Co., https://collections.library.yale.edu/catalog/15811567.