MS-579, Isle Royale Copper Company Time Book, Michigan Technological University Archives and Copper Country Historical Collections, Houghton, Michigan.
Cite Item Description
MS-579, Isle Royale Copper Company Time Book, Michigan Technological University Archives and Copper Country Historical Collections, Houghton, Michigan. https://michigantech.libraryhost.com/repositories/2/resources/248 Accessed January 31, 2025.
