This interesting map is based on Fremont's map of the same period. The region west of the Mississippi to the Pacific Ocean is delineated with the rivers and towns of the gold region in California well shown. The expedition route described is that of Captain Benjamin Bonneville who explored the American West from 1832-1836. The expedition party traveled parallel to the course of the Snake and the Columbia Rivers, going as far as Fort Walla Walla before turning back. Fremont's route through California is shown, as well as Kearny's route along the Gila River and the Emigrant route. Published by J.H. Colton, No. 172, William Street, New York.

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Condition: B+

Some overall very light toning in the west. One fold with toning and crack in Washington with small loss, tape repair on verso.