Picryl description: Public domain image of a quarry, mine, excavation, or mining site, free to use, no copyright restrictions.
California 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 a More
Picryl description: Public domain photo of vintage Maine postcard, free to use, no copyright restrictions image.