MLA

Company, Union Pacific Railroad. Map to Accompany Report of J.L. Williams on the Bridging of the Missouri River / Union Pacific Rail Road. s.n., 1867. https://collections.library.yale.edu/catalog/15814789.

APA, 6th edition

Company, U. P. R. (1867). Map to accompany report of J.L. Williams on the bridging of the Missouri River / Union Pacific Rail Road. [Maps]. s.n., https://collections.library.yale.edu/catalog/15814789.