[Opera] Britten, Sutherland, Christoff, Oberlin, De Los Angeles, Berganza, Siepi, Serafin, Giulini, Sargent etc. Two Opera Autograph BooksA very fine pair of autograph books containing signatures of many opera singers and conductors from the early 1960's. There are altogether 52 signatures, including composer Benjamin Britten and conductors Carl Maria Giulini, Gabriele Santini, Tullio Serafin, and Malcolm Sargent. Singers who have signed include: Teresa Berganza, Ivo Vinco, Luigi Alva, Victoria De Los Angeles, Joan Sutherland, Boris Christoff, Rolando Panerai, Anna Pollak, Russell