This collection contains papers associated with Charles Ross Huddle and his son Charles Richard Huddle who were mining engineers in Ivanhoe, Virginia, and served in various capacities with the National Carbide Company; Ivanhoe Mining and Smelting Corporation (formerly the Ivanhoe Furnace Company); New River Mineral Company; and Sand Mountain Sand Corporation. The papers include the Huddles' personal and business correspondence, W. F. Rupp's correspondence (business manager of the Ivanhoe Furnace Company's home office in Pittsburgh), and A. B. Dally's correspondence (chief executive officer of Ivanhoe Mining and Smelting Corporation), reports, business ledgers, employee records, deeds, blueprints, and approximately 300 photographs of Ivanhoe and the businesses with which the Huddles were associated. The collection also includes Charles Richard Huddle's files on St. John's Episcopal Church and Wythe county, and the local Ruritan Club. Papers date from the 1850s to the 1970s.