Map of the Union Pacific Rail Road and surveys of 1864, 65, 66, 67, 1868 from Missouri River to Humboldt Wells, G.M. Dodge, Chief Engineer. Topographical strip map between Council Bluffs, Iowa, to west of Great Salt Lake, Utah, showing located and experimental lines and profile of grades. Dodge, Grenville Mellen, 1831-1916. CREATED/PUBLISHED [n.p.], 1869. Scale 1:1,267,200.