Map showing the Pacific Railways and their Branches.
The Union Pacific and Central Pacific Railroads emerged in 1862 under the Pacific Railroad Act. The act initiated the construction of railroads west of the Missouri River in a hasty effort to control western resources during the American Civil War.
The Union Pacific was built westward from Council Bluffs, Iowa, while the Central Pacific was laid out east from San Francisco. The two lines met up at Promontory Summit in Utah in 1869 to much fanfare.
This relief map notes western waterways, cities, and towns. The railroad system is color coded or otherwise labeled. This map was prepared in 1887 by G.W. & C.B. Colton & Co. for the United States Pacific Railway Commission. It displays the United States from the west coast to the Mississippi River.