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).
Jean-Baptiste Massé (designer) and Laurent Cars (engraver) after Charles Le Brun. Alliance de l'Allemagne et de l'Espagne avec la Hollande 1672 Cintre de la Gallerie du côté du Salon de la Guerre (Alliance of Germany and Spain with Holland 1672, Center of the Gallery next to the Salon of War) [pl. 31], published 1752. National Gallery of Art, Washington.