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).
Jacopo Ligozzi (artist), Raffaello Schiaminossi (etcher), Lino Moroni (author). Apparition of the Virgin in the Beech Tree (Faggio dell'apparizione della Vergine) [plate P], 1612. National Gallery of Art, Washington.