DEGAS, Edgar (1834-1917). Autograph letter signed ("Degas"), in French, to Monsieur Halevy. N.p., n.d. 1 page, 12mo. Degas tells Halvy that he will not be able to attend dinner, but promises that he will come visit. Degas was a close friend of Ludovic Halvy, and executed gelatin silver prints of numerous members of the Halvy family.