BOULEZ (Pierre). Set of 3 letters. - 2 autograph letters signed to Roger Désormière. Without place or date [Paris, autumn 1951]. 3 pp. in-4.angular paper missing without affecting the text. - Autograph letter signed to Colette Steinlen. Paris [spring 1952]. 1 p. ¼ in-4. Attached: - Set of 6 autograph letters signed by Halévy, Marcelle Tinayre and various, addressed to Alphonse Royer, Germaine Perrin Inghelbrecht or to unidentified recipients. - Autograph letter signed by the composer René Garriguenec, addressed to Colette Steinlen, about Désormière's accident. Hollywood, 30 March 1952. 1 p. in-4.