Geological sketches of the precious metal deposits of the western United States
By: by S. F. Emmons and G. F. Becker, with notes on lead smeltner at Leadville. Extract from the tenth census of the United States, Vol. XIII "Statistic and technology of the precious metals."
Contributors: Becker, George F. 1847-1919.
Publisher: Government printing office
Published: 1885
Place of publication: Washington
Subjects: Geology -- United States.; Mines and mineral resources -- United States.