OPERA. 5 L.A.S. or P.A.S. John BRAHAM (l.a.s., co-signed by Giuseppe Naldi and Elizabeth Billington, 1809, about the organization of their concerts); Maria CALLAS (dedication a.s. "to Corradino Bonta, cordially Maria Meneghini Callas Milano 957", at the head of the book of R. Hauert and E. Gara dedicated to her, coll. I Grandi Interpreti, 1957); George HENSCHEL (l.a.s., 1878, to the London publishers Stanley Lucas Weber & Co); Gustave ROGER (l.a.s. from Avignon on his tour in Provence); VANNI-MARCOUX (l.a.s., 1941, to A. Saudemont for an interview, photo attached).