Abstract Autobiography, 1878-1950, by Ocha Potter, a native of Michigan's Upper Peninsula, head of the Keweenaw Road Commission and superintendent of the Ahmeek mine. Two versions found in collection. The expanded version includes photographs, newspaper clippings and additional material added by his descendants. Also includes an epilogue written twelve years after the initial memoir detailing the intervening years. The second version is a typescript copy shared by the National Park Service and is an...

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Ledger, 1903-1924, of the Portage Coal and Dock Company located in Ripley, Michigan. Includes financial records for expenditures, bills payable and bills receivable as well as records for the Hancock and Calumet retail branches, rents, dock repairs, hard and soft coal sales and some corporate accounts.

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Photograph collection, 1913-1914, assembled by Louis G. Koepel, long-time employee of the Quincy Mining Company in Hancock, Michigan.

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Records, 1969-2022, of the International Frisbee and USA Guts Hall of Fame.

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Video, 2008, of the service celebrating the 50th anniversary of the ordination of Reverend Robert V. Langseth, retired long-time pastor at Faith Lutheran Church in Calumet, Michigan.

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Time books, 1871-1876, from the copper mining company Schoolcraft Mining Company in Calumet, Michigan and the lead mining company Elevator Mine in Wisconsin.

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Samples, 1908-1970, of printed material from the Scott Print Shop in Calumet, Michigan. Includes theater programs, advertisements, business stationery, brochures and signs as well as cards, invitations and programs for various local clubs and organizations. Also includes political signs, union meeting notices and strike ballots.

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Records, 1897-1901, of the Sivert Olson Furniture Store, located in Calumet, Michigan. Includes a store accounting journal and a merchandise ledger.

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Oral history interview, 1974, with Socrates Antioho, a Calumet, Michigan resident and Greek immigrant. Includes audiocassettes as well as a typed transcript.

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Records, 1976-1982, of the Superior Foods Cooperative Inc. in Ahmeek, Michigan. Includes organizational records, financial records and newsletters from Superior Foods as well as records from other cooperatives in the area. Includes bylaws, stock certificates, membership information, order forms and newsletters from Common Health Warehouse Cooperative Association in Duluth, Minnesota, their food supplier, and newsletters from the Keweenaw Cooperative Inc. in Hancock, Michgan.