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).
Charles Meryon. Partie de la Cité vers la fin du XVIIe siècle (View of the City of Paris Towards the Close of the XVIIth Century), 1861. National Gallery of Art, Washington.