Léon VASSEUR (1844-1917). Autograph musical manuscript signed, La Famille Trouillat, [1874 ?]; 236 pages oblong in-fol. Orchestral score of this operetta in 3 acts, libretto by Hector Crémieux and Ernest Blum, music by Léon Vasseur, first performed on September 10, 1874, at the Théâtre de la Renaissance. The composer signed at the end of act I. Attached are: - manuscript by George Street, Mignonnette, [operetta in 3 acts, 1896], orchestral score by a copyist with some passages arranged by Henri Casadesus (335 p. in-fol, bound); - autograph manuscript of 6 numbers of Henri Casadesus' operetta, Le Rosier (106 p.); - autograph manuscript of the orchestral score of Edmond Diet's ballet Madame la Présidente (21 p.); - manuscript of the orchestral score of Claude Terrasse's Faust en ménage (96 p.); - printed score of Rossini's Il Barbiere di Seviglia (Paris, Pacini), bound in the name of Mlle Solaure Murat...