Edgar Degas, Paul Lafond and Alphonse Cherfils Examining a Painting, c. 1878–80, oil on wood panel, Cleveland Museum of Art, Cleveland. https://dartabase.art/cite/cleveland/135238

Edgar Degas, Diego Martelli, 1879, charcoal and white chalk, Cleveland Museum of Art, Cleveland. https://dartabase.art/cite/cleveland/130528