Cite

Map showing the location of the Northern Pacific Rail Road.

MLA

Map Showing the Location of the Northern Pacific Rail Road. M.H. Traubel's Lithographic Establishment, 0AD. https://collections.library.yale.edu/catalog/15535380.

APA, 6th edition

Map showing the location of the Northern Pacific Rail Road. (0 C.E.). [Maps]. M.H. Traubel's Lithographic Establishment, https://collections.library.yale.edu/catalog/15535380.