Woman on a Sofa, 1875. Edgar Degas. Oil colors freely mixed with turpentine, with touches of pastel, over graphite underdrawing, on pink paper. H. O. Havemeyer Collection, Bequest of Mrs. H. O. Havemeyer, 1929.
This seems to be an independent work that was developed in two stages. It probably began as a pencil drawing on a smaller sheet of paper that was enlarged by adding strips of paper at the bottom and sides. Degas completed the portrait with diluted oil paint and touches of pastel. The identity of the sitter is unknown.