[Washington. 1850]. 127pp. plus ten folding maps and profiles. [with:] (PART II.)... [Washington. 1850]. 37pp. plus three folding maps. Modern cloth, preliminary leaves tanned. Two maps loose but present. Some wear to maps at folds. Light foxing. About very good. Item #WRCAM13312A
"Probably the earliest work of true scientific research to emerge from the Gold Rush. Its author was a gifted scientist whose pioneering effort was of considerable value" - Wheat. Tyson's report was gleaned from his four- months' stay in California. His report was reprinted in 1851 as GEOLOGY AND INDUSTRIAL RESOURCES OF CALIFORNIA. The maps show the Sacramento Valley and the Sierra Nevada. WHEAT GOLD RUSH 212. WHEAT GOLD REGIONS 179. HOWES T455, "aa." KURUTZ 643b.