Territory of the United States from the Mississippi River to the Pacific Ocean : originally prepared to accompany the reports of the explorations for a Pacific railroad route / compiled from authorized explorations and other reliable data by G. K. Warren
MLA
Freyhold, Edward. Territory of the United States from the Mississippi River to the Pacific Ocean : Originally Prepared to Accompany the Reports of the Explorations for a Pacific Railroad Route / Compiled from Authorized Explorations and Other Reliable Data by G. K. Warren. War Dept., 0AD. https://collections.library.yale.edu/catalog/15812956.
APA, 6th edition
Freyhold, E. (0 C.E.). Territory of the United States from the Mississippi River to the Pacific Ocean : originally prepared to accompany the reports of the explorations for a Pacific railroad route / compiled from authorized explorations and other reliable data by G. K. Warren [Maps]. War Dept., https://collections.library.yale.edu/catalog/15812956.
