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).
Parmigianino and Antonio da Trento or Ugo da Carpi, after Raphael. Saints Peter and John Healing the Lame Man at the Golden Gate, c. 1527/1530. National Gallery of Art, Washington.