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).
Pierre-Eugène-Emile Hébert. Amazon Preparing for Battle (Queen Antiope or Hippolyta?), or Armed Venus, model c. 1860/1872, cast by 1882. National Gallery of Art, Washington.