MS-005, Calumet and Hecla Mining Companies Drawings Collection, Michigan Technological University Archives and Copper Country Historical Collections, Houghton, Michigan.
Cite Item Description
MS-005, Calumet and Hecla Mining Companies Drawings Collection, Michigan Technological University Archives and Copper Country Historical Collections, Houghton, Michigan. https://michigantech.libraryhost.com/repositories/2/resources/5 Accessed November 01, 2024.
