Philadelphia: Mitchell, Samuel Augustus Jr. 1861. Map. Steel engraving with original hand coloring. Image measures 11.5" x 14". Classic map of the west, with Kansas, Nebraska, Colorado and part of Idaho divided into counties, showing major towns and cities, routes, railroads and geographic features. S. Augustus Mitchell Jr. continued his father's successful mapmaking and publishing business, and was one of the most prolific and renowned 19th century American publishers. In excellent condition.