An iconic map of the Civil War era, this is A. J. Johnson’s rendition of the American Southwest.
The map depicts a post-Mexican–American War Southwest, where the United States acquired vast territories from Mexico under the 1848 Treaty of Guadalupe Hidalgo, including regions that are today’s California, Arizona, New Mexico, Texas, and parts of Utah, Nevada, and Colorado. The Gadsden Purchase of 1853 is also marked, solidifying the southern boundaries of Arizona and New Mexico.
It features key landmarks such as the Rocky Mountains, the Sierra Nevada, the Mojave Desert, the Rio Grande, and the Colorado River, and indicates various indigenous settlements, Spanish missions, frontier towns, military outposts, and trail routes like the Emigrants Trail. The old Pony Express and U.S. Mail Route is plotted.
Note especially the western portion of Arizona, which includes what is now southern Nevada, including Las Vegas.
Copious notes are included on the terrain and peoples of the region.