MUSIC. 32 letters or pieces, mostly L.A.S. Émile R. Blanchet (musical p.a.s., 1916), Alfred Bruneau (7, including autogr. list of his works), Gustave Doret (dedication), Jean Fournet (8 l. to M. Mihalovici, 1964-1977), César Franck, Henri Gagnebin, Walter Gieseking, Fromental Halévy (2, including note on the invention of a baritone by M. Lacome du Havre), Georges Hüe (musical p.a.s., 1916), Maurice Journeau (l. with music to Monique Haas), Léon Klepper (musical p.a.s.), Édouard Lalo (on visiting card), Antoine Le Bailly, Marcel Mihalovici (double l. to Jean Martinon), Frédérick Martin (music a.s., Ecténie pour piano), Rolf Plagge (music a.s., Kleine Komposition auf den Namen H-a-a-s, 1978), Francis Poulenc, Emil Sauer (musical p.a.s., 1912), Georges-Martin Witkowski (1913, about a Busoni concert in Lyon). We enclose 5 signed photos (on programs) by Valérie Aimard, Maurice André, Roberto Benzi (on postcard), William Christie, Marc Laforet.