Includes maps of: Lewis and Clark, and the Astorians; Long, Pike, Dunbar and Hunter, and Freeman and Dunbar; Walker, Smith, Old Spanish Trail, and Pattie; Fremont-Nicollet and Fremont; Kearney, Abert, Fremont, Emory, Abert, Hughes, and Cooke; Mexican Boundary Survey; Stansbury, Simpson, Sitgreaves, and Marcy-Simpson; Whiting-Smith, Neighbors-Bryan, Johnston, Michler-Fort Washita, and Michler-San Antonio-Ringgold Barracks; Warner-Williamson and Derby; Pacific Railroad Surveys; Wagon Roads in Minnesota, Nebraska, Kansas, and New Mexico; Wagon Roads in Washington, Oregon, and Utah; Ives, Macomb, and Simpson; Warren, Reynolds, Mullan Road, and Northwest Boundary Survey; Territory West of the Rocky Mountains; Indian Tribes of North America. Includes index.