French painter and sculptor (1901–1985) known for his authentic and humanistic approach. TLS in French, one page, 5.75 x 4.5, November 5 [1945]. Early letter to a friend. Translated in full: “Why have you disappeared? Have I upset you by some innocent joke that may have been misinterpreted? I really apologize if I may have upset you in any way and I hope to see you soon. Friendly regards.” In very good condition, with two vertical folds, rough right edge, toning along left side, and a small pencil notation to top. Dubuffet’s career was taking off soon after the war when he would introduce the concept of “Art Brut.” RR Auction COA.