Scope and Contents From the Sub-Series: The Detroit and Lake Superior Copper Company Records contain correspondence, receipts, invoices, and reports of General Managers John R. Grout and James R. Cooper and Chief Clerk Z. W. Wright. It includes records from its predecessor, the Waterbury and Detroit Copper Company.Note that the Keweenaw Historical Society filed the material into company files based on the content of the letter, not the correspondent.Note that the records of the Detroit and Lake Superior...

Scope and Contents From the Sub-Series:

This subseries consists of the records of M. Freud & Son and Raley & Sharpley, as well as unidentified records that are likely from one of the two.

Scope and Contents From the Sub-Series:

This subseries includes material from Houghton, Phoenix Mine, and Eagle River stores.

Scope and Contents From the Sub-Series:

This subseries includes material from Houghton, Phoenix Mine, and Eagle River stores.

Scope and Contents From the Sub-Series:

This subseries includes material from Houghton, Phoenix Mine, and Eagle River stores.

Scope and Contents From the Sub-Series:

This subseries includes material from Houghton, Phoenix Mine, and Eagle River stores.

Scope and Contents From the Sub-Series:

This subseries includes material from Houghton, Phoenix Mine, and Eagle River stores.