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).
French early 16th Century. "Obliterate the Trace of the Pot in the Ashes" [fol. 32 verso / 33 recto], c. 1512/1515. National Gallery of Art, Washington.