![View of Dolores Valley, showing Smelter [?].](https://cache.getarchive.net/Prod/thumb/cdn6/L3Bob3RvLzE5MDAvMTIvMzEvdmlldy1vZi1kb2xvcmVzLXZhbGxleS1zaG93aW5nLXNtZWx0ZXItYjdhMWZlLTY0MC5qcGc%3D/40/20/webp "View of Dolores Valley, showing Smelter [?].")
View of Dolores Valley, showing Smelter [?].
Public domain photograph of a mountain pass, mountains, nature, mountain range, view, landscape, rocks, free to use, no copyright restrictions - Picryl description
El Paso Smelter, El Paso, Texas
Picryl description: Public domain photo of a vintage Texas postcard, free to use, no copyright restrictions image.
Pouring Copper, Quincy Smelter, Hancock, Mich.
Picryl description: Public domain photo of vintage Michigan postcard, free to use, no copyright restrictions image.
The smelter, at Black Hawk, Colo.
Picryl description: Public domain image related to an industrial revolution, industry history, factory building, free to use, no copyright restrictions image.
Lake Superior Smelter, Loading Copper, Dollar Bay, Mich.
Picryl description: Public domain photo of vintage Michigan postcard, free to use, no copyright restrictions image.
![View of Dolores Valley, showing Smelter [?].](https://cache.getarchive.net/Prod/thumb/cdn6/L3Bob3RvLzE4NTAvMDEvMDEvdmlldy1vZi1kb2xvcmVzLXZhbGxleS1zaG93aW5nLXNtZWx0ZXItNDNkZjk0LTY0MC5qcGc%3D/40/21/webp "View of Dolores Valley, showing Smelter [?].")
View of Dolores Valley, showing Smelter [?].
Public domain scan of the back of stereograph card, stereoscopic view, 19th century, free to use, no copyright restrictions - Picryl description
The smelter, at Black Hawk, Colo.
Colorado stereoscopic card. Robert Dennis's stereographs collection includes more than 72,000 stereoscopic views organized primarily by geography. The collection bears the name of the native New Yorker who ass... More
The smelter, at Black Hawk, Colo.
Picryl description: Public domain image related to an industrial revolution, industry history, factory building, free to use, no copyright restrictions image.
![View of Dolores Valley, showing Smelter [?].](https://cache.getarchive.net/Prod/thumb/cdn6/L3Bob3RvLzE4NTAvMDEvMDEvdmlldy1vZi1kb2xvcmVzLXZhbGxleS1zaG93aW5nLXNtZWx0ZXItNGIwN2RjLTY0MC5qcGc%3D/40/20/webp "View of Dolores Valley, showing Smelter [?].")
View of Dolores Valley, showing Smelter [?].
Public domain photograph of a mountain pass, mountains, nature, mountain range, view, landscape, rocks, free to use, no copyright restrictions - Picryl description
The smelter, at Black Hawk, Colo.
Colorado stereoscopic card. Robert Dennis's stereographs collection includes more than 72,000 stereoscopic views organized primarily by geography. The collection bears the name of the native New Yorker who ass... More
Copper smelter at Douglas, Arizona. This smelter was originally at Bis...
Picryl description: Public domain historical photograph of 1930s America during the Great Depression, free to use, no copyright restrictions image.