Records consist of stock certificates and stubs (October 1892-July 1894).

The Hidden Treasure Gold Mining Company mines were located near Elliston, Montana Territory. Collection consists of two letters (May 14 and 22, 1888) one from company president D.C. Price and the other from John Phillips, an employee and trustee of the company, discussing the potential of the mine.

The Jardine Mining Company was a gold mining operation at Jardine, near Gardiner, Montana. Collection contains financial volumes, reports, correspondence, organizational materials, printed materials, legal documents, etc. There are subgroups for the Bear Gulch Mining Company, the Kimberly Montana Gold Mining Company, the King Solomon Quartz and Placer Mining Company, the Legal Tender Mining Company, the Montana Consolidated Gold Mining Company, the Rademont Mining Company, and the Revenue Mining Company. [PORTIONS OF THIS COLLECTION ARE RESTRICTED]

Records include correspondence (August-September 1888) between mine superintendent Charles Starrett and company officer Erastus D. Edgerton; and financial records (July-October 1888) including statements of expenses, payrolls, and invoices.

This collection consists of financial records, including bills, receipts, and payrolls; correspondence; and miscellaneous notes of the Elkhorn Queen Mining Company of Helena, Montana.

The Henderson Mining Company was a gold mining firm located at Henderson, Powell County, Montana. Collection contains an expense ledger (August 1902-July 1903). (MF 277A)