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 Nègre, Jean-Baptiste-Camille Corot, André Jammes. Planche XI – Le Bûcheron (Plate XI – The Woodcutter), c. 1857, printed 1982. National Gallery of Art, Washington.