Post route map of the state of Texas : with adjacent parts of Louisiana, Arkansas, Indian Territory, and of the Republic of Mexico / designed and constructed under the orders of Postmaster General D.M. Key by W.L. Nicholson.
MLA
Nicholson, W. L. Post Route Map of the State of Texas : with Adjacent Parts of Louisiana, Arkansas, Indian Territory, and of the Republic of Mexico / Designed and Constructed under the Orders of Postmaster General D.M. Key by W.L. Nicholson. Post Office Dept., 0AD. https://collections.library.yale.edu/catalog/15811573.
APA, 6th edition
Nicholson, W. L. (0 C.E.). Post route map of the state of Texas : with adjacent parts of Louisiana, Arkansas, Indian Territory, and of the Republic of Mexico / designed and constructed under the orders of Postmaster General D.M. Key by W.L. Nicholson. [Maps]. Post Office Dept., https://collections.library.yale.edu/catalog/15811573.
