Thérèse de Gas

Atelier Degas - Succession Degas - René de Gas, Paris - Vente René de Gas, Paris-Drouot, 10 novembre 1927, n° 17 - Boston, Museum of Fine Arts, 1931.

Cleveland, Cleveland Museum of Art, juin 1947, Works by Degas, n° 54 - Washington, Phillips Memorial Gallery, 1947, Loan Exhibition of Drawings and Pastels by Edgar Degas, n° 25 -Minneapolis, Institute of Fine Arts, 1948, Degas Portraits [n.n) - La Nouvelle Orléans, Isaac Delgado Museum, 1965, Degas : His Family and His Friends in New Orleans, p. 57, pl. X - Saint-Louis, Philadelphie, Minneapolis, 1967, Drawings by Degas, n° 4, repr . p. 27 - Paris, Ottawa, New York, 1988-1989, Degas, n° 3, repr. p. 63 -  Zurich, Tübingen, 1994-1995, Degas. Die Portraits, cat. 10, repr. p. 182 - La Nouvelle Orléans, Copenhague, 1999, Degas and New Orleans. A French Impressionist in America, n° 5, repr. p. 119 - Melbourne, Houston, 2016-2017, Degas : A New Vision, (n.n). repr. p. 16.

Philip Hendy, "Degas and the Degas", Bulletin of the Museum of Fine Arts, Boston, juin 1932, p. 44 - Jakob Rosenberg, Great Draughtmen from Piranello to Picasso, Cambridge, 1959 - Boggs, Cat. exp. Saint-Louis, Philadelphie, Minneapolis, 1967, Drawings by Degas, n° 4, repr. p. 27 - Paris, Edimbourg, Oxford, 1995, Dessins français de la collection Prat XVIIIe-XIXe siècles, fig.1, repr. p. 208 -  Feigenbaum, Boggs, Cat. exp. La Nouvelle Orléans, Copenhague, 1999, Degas and New Orleans. A French Impressionist in America, n° 5, repr. p. 119.