This fine map of California and the large western territories is from this important series of maps originating with Samuel Augustus Mitchell. The map is filled with early county configurations, the exploration routes of Lewis and Clark, Fremont, Kearney, and Cooke, and the Spanish and Oregon Trails. Washington and Oregon have their eastern boundaries in the Rocky Mountains at the Continental Divide with their limited county development confined to west of the Cascades. Utah Territory extends to Middle Park and Long's Peak in present-day Colorado and its eastern border with Nebraska and Kansas. The three vertical counties of Carson, Humboldt and St. Marys form the beginnings of what will become Nevada. The Proposed Arazonia [sic] Territory is demarcated between the Gila River and the Gadsden Treaty Line. Has Desilver's unique scroll border, with his imprint at No. 251 Market Street, Philadelphia. A fine example of this very desirable map.

References: Wheat [TMW] #890.

Condition: A

Near fine example less a little binding paste residue along left side that sometimes touches border. The map has original margins, crisp impression and fine original coloring.