License, verbatimPD
The Rijksmuseum, Amsterdam: image designated Public Domain (Public Domain Mark 1.0) in the museum's own Linked Art record.
Pietro Sante Bartoli (mentioned on object). Pratensium multitudo cum effugere obseratis portis nequiret interficitur supra quinque inermium hominum millia caesa sunt, 1645 - 1700. Rijksmuseum, Amsterdam.