1. 'Pictures Properly Framed': Degas and Innovation in Impressionist Frames Author Easton, Elizabeth and Bark, Jared Published 2008
2. Degas Notebooks at the Bibliothèque Nationale I: Group A (1853-1858) Author Boggs, Jean Sutherland Published 1958
3. Degas Notebooks at the Bibliothèque Nationale III: Group C (1863-1886) Author Boggs, Jean Sutherland Published 1958