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 XIII – Cathédrale de Chartres, Statues Colonnes de la Porte Centrale du Portail Royal (Plate XIII – Chartres Cathedral, Statue Columns in the Central Door of the Royal Entrance), 1855, printed 1982. National Gallery of Art, Washington.