MS-736, Calumet and Hecla Employee Database, Michigan Technological University Archives and Copper Country Historical Collections, Houghton, Michigan.
Cite Item Description
MS-736, Calumet and Hecla Employee Database, Michigan Technological University Archives and Copper Country Historical Collections, Houghton, Michigan. https://michigantech.libraryhost.com/repositories/2/resources/402 Accessed November 21, 2024.
