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).
Jan Pietersz Saenredam, after Hendrik Goltzius. Artist Painting a Nude Woman: Allegory of Visual Perception, c. 1598; published after 1616. National Gallery of Art, Washington.