R. C. Luesley's burro pack train, in a mountain pass, loaded with merc...
Public domain photograph of a mountain pass, mountains, nature, mountain range, view, landscape, rocks, free to use, no copyright restrictions - Picryl description
Relics of the cliff dwellers of the Mesa Verde, Colorado, U.S.A.
Picryl description: Public domain image from Robert Dennis collection of stereoscopic prints, free to use, no copyright restrictions.
Driving a crosscut, Folus mine, Needle Mountain, Colorado, U.S.A.
Public domain photograph of a mountain pass, mountains, nature, mountain range, view, landscape, rocks, free to use, no copyright restrictions - Picryl description
Colorado Assay Office. - Sterescope Card, Colorado
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
![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
Miners loading supplies, Silverton, Col., U.S.A.
Picryl description: Public domain image of a rural farming landscape, agriculture, farm animals, livestock, farmers, free to use, no copyright restrictions image.
Dismantled towers, and turrets broken!" - Cliff Palace in the Mesa Ver...
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
Relics of the cliff dwellers of the Mesa Verde, Colorado, U.S.A.
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
Canyon from the cascades. - Sterescope Card, Colorado
Public domain photograph of a mountain pass, mountains, nature, mountain range, view, landscape, rocks, free to use, no copyright restrictions - Picryl description
Relics of the cliff dwellers of the Mesa Verde, Colorado, U.S.A.
Picryl description: Public domain image from Robert Dennis collection of stereoscopic prints, free to use, no copyright restrictions.