Desilver issue of the Mitchell atlas. Fine hand-colored series, with 33 of the maps pertaining to the United States. The general map of the United States is double-sheet, shows the Gadsden Treaty Line of 1854 and has an inset of the Gold Region of California. Also included are maps of California and Territories of Oregon, Washington, Utah and New Mexico; and Nebraska, Kansas, New Mexico, and Indian Territories. This copy with ownership gilt-stamp of E.A. Benedict to front cover and 1869 ownership signature of Cyrus Offer to front free endpaper. Phillips Atlases 823 (1857 issue).