"The Sacramento Valley from American River to Butte Creek, Surveyed and drawn by Order of Genl. Riley , commandg. 10th Military Dept. by Lieut. Derby, Topl. Engrs. September & October 1849", Derby, George Horatio (Lt)

Map of major importance to the CALIFORNIA GOLD RUSH. On a scale of 4-1/2 miles to the inch, it provides a detailed view of the region with numerous small towns, ranches, "Diggings", trails and roads. Shows Sacramento, American River, numerous gold diggings including Mormon and Dry. Interesting notations concerning grazing, road conditions, soil fertility, etc.

References: Wheat (Gold) #149.

Condition: B

Folding as issued, with a bit of light foxing, overall very good condition.