Courbet: https://www.flickr.com/photos/gandalfsgallery/29515041142/in/photostream/lightbox/
(similar, palette knife, should try): https://www.flickr.com/photos/gandalfsgallery/7095605373/in/photostream/lightbox/
Signac: https://www.flickr.com/photos/gandalfsgallery/30196528156/in/photostream/lightbox/
