Picryl description: Public domain historical book on American Civil War, free to use, no copyright restrictions image.
Public domain scan of the back of stereograph card, stereoscopic view, 19th century, free to use, no copyright restrictions - Picryl description
Picryl description: Public domain photo of vintage Maryland postcard, free to use, no copyright restrictions image.
Picryl description: Public domain image of a ship in the sea, harbor, maritime, free to use, no copyright restrictions.