MS-755, Portage Coal and Dock Company Ledger, Michigan Technological University Archives and Copper Country Historical Collections, Houghton, Michigan.
Cite Item Description
MS-755, Portage Coal and Dock Company Ledger, Michigan Technological University Archives and Copper Country Historical Collections, Houghton, Michigan. https://michigantech.libraryhost.com/repositories/2/resources/420 Accessed January 19, 2025.
