Scope and Contents From the Series: The Detroit and Lake Superior Copper Company Records contain correspondence, financial records, and reports of General Managers John R. Grout and James R. Cooper and Chief Clerk Z. W. Wright. It includes records from its predecessors, the Waterbury and Detroit Copper Company and the Portage Lake Smelting Works, as well as its successors, the Lake Superior Smelting Company and the Tamarack-Osceola Copper Manufacturing Company.Note that the records of the Detroit and Lake Superior...

Scope and Contents From the Series:

This series contains correspondence, financial records, and reports from various companies, including the Foley and Smith Store (Eagle Harbor), Keweenaw Copper Company, Ojibway Mining Company, Phoenix Consolidated Copper Company, and Washington Copper Company