Drawing by Vischer of the East Summit of Sierra Nevada, 1861

Photograph of a drawing by Edward Vischer of the East Summit of the Sierra Nevada, 1861. Caption: "East summit of the Sierra Nevada [mountains]. Placerville - Carson [City] route, the pass from the California side, Vischer, 1861." A driver with a long whip stands beside a wagon drawn by an eight-oxen team as it moves up the dirt road on the heavily forested slope