Public domain illustrated book page scan, American, free to use, no copyright restrictions image - Picryl description
Picryl description: Public domain image of a historic building in Philadelphia, Pennsylvania, free to use, no copyright restrictions.
Public domain scan - 18th-century landscape print, free to use, no copyright restrictions image - Picryl description
Public domain scan of American 19th-century print, free to use, no copyright restrictions image - Picryl description
Picryl description: Public domain photograph of a historic Capitol building, free to use, no copyright restrictions.