"Geological Map of a Part of the State of California Explored in 1853 by Lieut. R.S. Williamson U.S. Top. Engr.", U.S. War Department
Period: 1856 (published)
Color: Hand Color
16 x 22.2 inches
40.6 x 56.4 cm
Colorful map of California covering the entire state, but only a portion is colored to reflect geological knowledge. These regions are color coded in accordance with a legend at the left side of the map. Interesting details throughout, and especially along the American River. Lake Tahoe is not shown, rather there is a very small lake named Lake Bonpland. Prepared to accompany the report of William P. Blake, Geologist of the Expedition.
Folding as issued. A couple of spots and binding side tear, repaired, else very good.