Correspondence of Dr. and Mrs. Laney, materials collected by Laney, including letters to J.R. DeLamar regarding mining in Silver City, Idaho, and letters to geologists J.W. Finch, W.C. Kerr, F.A. Thomson, and L.F. Ward, memorabilia dating from 1893-1928, and over 800 photographic negatives relating to World War I and European travel. Also included is a scrapbook, 1927-1938, compiled by Laney's son, F.T. Laney, a University of Idaho student.

Correspondence, tax returns, and other financial material relating to the various mining companies which eventually made up Day Mines, Inc. from the files of the firm's comptroller.

Minutes of meetings, financial statements, general correspondence, annual statements, stock ledger, cancelled stock certificates, financial ledgers and journals, appraisals, tax returns, and other records of a silver-lead mine in the Hunter Mining District of the Coeur d'Alene mining area of northern Idaho, organized successively as Gold Hunter Mining and Smelting Company, Gold Hunter Mines, and Gold Hunter Mining Company.

Mining technology and travel illustrated notebook of H. L. Bridgman analyzing mines in Germany and the United States, including a description of the Stevens & Leiter mine in Leadville, Colorado in 1879.

Correspondence and organizational, stock, financial, ore production, plant, personnel, accident, tax, insurance, and other records of a silver-lead-zinc mine in the Coeur d'Alene region of Idaho.

Minutes of meetings, annual statements, stock records, tax returns, and other financial records of a silver-lead mine in the Hunter Mining District of the Coeur d'Alene region of Idaho.

Correspondence and organizational, stock, financial, personnel, tax and other records of a silver, lead and zinc mine in the Lelande Mining District of the Coeur d'Alene region of Idaho.

Correspondence letterpress book, financial ledgers and journal, and assay records of a silver-lead mine in the Beaver Mining District of the Coeur d'Alene region of northern Idaho.

General correspondence and other records concerning the dredging operation, tax returns, and financial records of a gold placer claim near Alleghany, Sierra County, California.

Correspondence and organizational, stock, financial and other records of a company, 1943-1947, owned in part by the Hercules Mining Company and other mines, which was established to consolidate fifteen properties in the Leland and Hunter Mining Districts of Idaho. Portions of the correspondence extend from 1908-1961.