Edgar Degas, Dancers, c. 1896, pastel with charcoal on tracing paper mounted on paper and backed with gray board, Cleveland Museum of Art, Cleveland. https://dartabase.art/cite/cleveland/95271

Edgar Degas, Before the Race, c. 1887–89, pastel with charcoal underdrawing on tracing paper mounted on cardboard, Cleveland Museum of Art, Cleveland. https://dartabase.art/cite/cleveland/135262