MS-663, Portage Lake Foundry and Machinery Company Records, Michigan Technological University Archives and Copper Country Historical Collections, Houghton, Michigan.
Cite Item Description
MS-663, Portage Lake Foundry and Machinery Company Records, Michigan Technological University Archives and Copper Country Historical Collections, Houghton, Michigan. https://michigantech.libraryhost.com/repositories/2/resources/329 Accessed January 31, 2025.
