A history of the precious metals, from the earliest periods to the present time; with directions for testing their purity, and statements of their comparative value, estimated cost, and amount at different periods; together with an account of the products of various mines; a history of the Anglo-Mexican mining companies, and speculations concerning the mineral wealth of California:

- publisher: Hartford, Belknap and Hamersley
- creator: Comstock, J. L. (John Lee), 1789-1858
- Keyword: Precious metals.
- years: 1849.
- pages: viii, [9]-222 p.
- class: TN410
- download: pdf file