Map shows existing and proposed railroads, major roads, cities and towns, North American Indian tribes, U.S. Mail and Pony Express routes, and pre-statehood boundaries for contiguous western United States. Alaska is among "Russian Possessions" and Canada is "British America." Mexico, Central America, Greenland, and West Indies are also pictured. Relief shown by hachures and spot heights. Scale [ca. 1:15,840,000].