California and the southwestern United States at the time of the Civil War. We see the early county divisions, including the original four counties of Arizona and sixteen counties of Colorado. Colorado still has the Cheyenne and Arapahoe Indian reservations. Shows many early settlements, forts, mountain passes, Indian tribes, and mineral fields We also see route marks for the Fremont and Gunnison Expeditions, the Oregon and Spanish Trails, mail routes, and a proposed Atlantic – Pacific Railroad.