License, verbatimPD
The National Gallery of Art: open access image with no usage restrictions under the NGA's open access policy (openaccess=1 in the Gallery's published_images dataset).
Giuseppe Vasi, after Giuseppe Palazzi, after Paolo Posi. The Seconda Macchina for the Chinea of 1772: A Square with a Game Market and the Pantheon Fountain, 1772. National Gallery of Art, Washington.