Bancroft, Howland; Reconnaissance of the Ore Deposits in Northern Yuma County, Arizona. USGS Bull. 451,GPO, Washington, 1911.

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Product Description
Bancroft, Howland; Reconnaissance of the Ore Deposits in Northern Yuma County, Arizona. USGS Bull. 451,GPO, Washington, 1911. Octavo, pp. 130, folded map at rear, 7 additional plates, 21 figures.
The work is complete and in a later title wrap with black titles. Binding tight and clean, text and plates very clean and bright. In very good condition.
Bancroft describes the topography, geography, geology, stratigraphy and structural geology, and gold, copper, lead, iron and quicksilver deposits and their origins. He then describes the mines and mining districts throughout this region which is located on the border of Arizona and California.