COTTRAU MANUSCRIPTS. Vol. IV A-D. 'La Lega Lombarda', opera in three acts; 1907. Autograph. Libretto by [the composer?]. First performed at the Teatro Quirino, Rome, 1907. Published, in vocal score, by C. F. Leede, Leipzig, n.d. See 50272 D.
COTTRAU MANUSCRIPTS. Vols. V, VI. 'Cordelia (Re Lear)', opera in two acts; 1913. Libretto after William Shakespeare. First performed in Padua, 1913. Published by the composer in vocal score, Rome, 1913. The published libretto, 50272 E, gives no author for the text, but the cover of G.691.j(19) in the Music Library lists among Cottrau's works a four-act opera, 'Le Roi Lear', to a libretto by Golisciani.