The Heart of the copper country, Calumet, Mich.
Public domain photograph - panorama, United States, free to use, no copyright restrictions image - Picryl description
Miners in car entering slope shaft which is 5,000 feet deep, Calumet-H...
Copper miners in tram. Public domain photograph of a tram car, free to use, no copyright restrictions image - Picryl description
The Heart of the copper country, Calumet, Mich.
Public domain photograph of industrial architecture, factory building, free to use, no copyright restrictions image - Picryl description
![Just up, Hecla [i.e. Calumet and Hecla Mine] shaft No. 2, Calumet, Mich.](https://cache.getarchive.net/Prod/thumb/cdn4/L3Bob3RvLzE5MDYvMDEvMDEvanVzdC11cC1oZWNsYS1pZS1jYWx1bWV0LWFuZC1oZWNsYS1taW5lLXNoYWZ0LW5vLTItY2FsdW1ldC1taWNoLTEwMjQuanBn/40/50/webp "Just up, Hecla [i.e. Calumet and Hecla Mine] shaft No. 2, Calumet, Mich.")
Just up, Hecla [i.e. Calumet and Hecla Mine] shaft No. 2, Calumet, Mic...
Public domain photograph - historical image of Michigan, United States, free to use, no copyright restrictions image - Picryl description
A mile underground--loading and handling cars with copper ore, Calumet...
Men pushing trams, loaded with copper ore. J218074 U.S. Copyright Office. Copyright by Keystone View Company. No. 22037.
Calumet, Hecla & Red Jacket, Mich. : 1881 /
Bird's-eye view. LC Panoramic maps (2nd ed.), 340.1 Available also through the Library of Congress Web site as a raster image. Indexed for points of interest.
The Heart of the copper country, Calumet, Mich.
Public domain photograph - panorama, United States, free to use, no copyright restrictions image - Picryl description
The Heart of the copper country, Calumet, Mich.
Picryl description: Public domain image of a quarry, mine, excavation, or mining site, free to use, no copyright restrictions.
Hoisting engine, Tamarack No. 5, Calumet, Mich.
Public domain image of an industrial building, factory, structure, works, 19th-20th century industrial revolution, free to use, no copyright restrictions - Picryl description
The Heart of the copper country, Calumet, Mich.
Public domain photograph of a village, town, free to use, no copyright restrictions image - Picryl description
The Heart of the copper country, Calumet, Mich.
Public domain photograph - panorama, United States, free to use, no copyright restrictions image - Picryl description
![[Tamarack # 5, Calumet, Mich.] - Public domain image. Dry plate negative.](https://cache.getarchive.net/Prod/thumb/cdn4/L3Bob3RvLzE5MDAvMDEvMDEvdGFtYXJhY2stNS1jYWx1bWV0LW1pY2gtMTAyNC5qcGc%3D/40/31/webp "[Tamarack # 5, Calumet, Mich.] - Public domain image. Dry plate negative.")
[Tamarack # 5, Calumet, Mich.] - Public domain image. Dry plate negati...
Public domain image of an industrial building, factory, structure, works, 19th-20th century industrial revolution, free to use, no copyright restrictions - Picryl description
The Heart of the copper country, Calumet, Mich.
Public domain photograph - panorama, United States, free to use, no copyright restrictions image - Picryl description