"Topographical Sketch of the Gold & Quicksilver District of California",
Period: 1848 (dated)
Color: Black & White
15.5 x 21.5 inches
39.4 x 54.6 cm
This is considered one of the most important maps of 1848 and accompanied the first official report of the gold discoveries. It was the first map to reflect actual conditions at the mines and was of paramount importance to the "Gold Rush". It shows in detail the area south of San Francisco Bay (the Quicksilver area), across the Sacramento Valley and San Joaquin Plains and east to Lake Tahoe (here called Mountain Lake). Notes indicate were gold was to be found throughout the region.