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, André Jammes. Planche IV – Pifferaro Debout et Paysanne Italienne Assise, dans la Cour du 21 Quai Bourbon (Plate IV – Pifferaro Standing and Italian Peasant Seated, in the Court of 21 Quai Bourbon), 1854, printed 1982. National Gallery of Art, Washington.