Scope and Contents From the Collection: The Empire Copper Company papers (including its predecessors, the White Knob Copper Company, White Knob Copper and Development Company, and Macbeth Lease, and its successors, Idaho Metals Company, Mackay Metals, and Mackay Exploration Company) are contained in 293 small file boxes, bound journals and letterbooks. Included are a great deal of correspondence, both corporate and personal, legal papers, scrapbooks, financial journals, and a variety of company reports. The...