MUSIC. 52 letters or parts, most of them L.A.S. Adolphe ADAM (1849, in Saint-Georges, long letter on their collaboration and the new direction of the Opera), Pierre-Hyacinthe AZAÏS (2, in Panseron 1828, and in Baillot 1832), Albert BOURGAULT-DUCOUDRAY (trip to Switzerland and concert in Zurich), Alfred BRUNEAU, Emmanuel CHABRIER (musical sketch), Cécile CHAMINADE (2), Luigi CHERUBINI (2, whose end of a report co-signed by Gossec, Le Sueur and Berton), Léo DELIBES, Théodore DUBOIS (2), Pauline DUCHAMBGE (2), Reynaldo HAHN (2), Marie KRYSINSKA (5 to Jacques du Sautoy, "co-hydropath"), Charles LECOCQ (2), Franz LEHÁR (business card a.s. in Max Eschig), Charles MALHERBE (8), Jules MASSENET (3), Ferdinand PAËR (in Zimmerman), Ferdinand POISE, Joachim RAFF (Weimar 1854, in C.F. Peters), Ernest REYER (7, notably on Sigurd and Salammbô), Jean ROGER-DUCASSE (2), Oscar STRAUS (photo dedication), Claude TERRASSE, Ambroise THOMAS (1868, on the funeral of Rossini), Édouard WOLFF (ms of 3 pieces for piano). We enclose 3 musical manuscripts in copy: Gabriel Pierné (Fantaisie basque for violin and piano dedicated to Jacques Thibaud), A. Rubio (Plegaria for cello and organ), Henri Wieniawski (Caprice arranged by Jacques Thibaud with autogr. dispatch from Thibaud to Jules Boucherit); plus the illustrated program of the Concerts de danse N. Trouhanowa (1912, ex. by Gustave Samazeuilh with his signature, defects on the cover).