The J. Paul Getty Museum
John P. Soule
License, verbatimCC0
The J. Paul Getty Museum: image dedicated to the public domain under Creative Commons Zero (CC0), stated on the media record itself ('Rights for Media'), with download clearance.
John P. Soule. Niagara - The Horse Shoe Fall and Tower, from Goat Island. (Inst.), 1861–1871. The J. Paul Getty Museum.