Correspondence, notes from interviews, foreman`s notebook, geology and production reports, annual reports, microfilm of Congressional reports.

Kenneth Rank was Chief Geologist for New Idria Mining Company. He collected history and information about the mines in preparation for writing a book. The mine was said to have been discovered in 1851, with state incorporation on January 27, 1858, and federal patent applied for in 1868. California Corporation status was forfeited on December 14, 1905. The mines and town were sold at auction in 1973.

Please credit California State Library.

Unrestricted.