His Letters, New York, Vienna House. External links Libretto (in Italian) on giuseppeverdi.it Six arias from Oberto on aria-database.com TUTTO OPERA, Oberto, Conte di San Bonifacio (Argument, Analysis, Discography, Vocal Score PDF, etc) on tutto-opera.com (in Spanish) Retrieved 20 December 2010 Verdi: "The story" and "History" on giuseppeverdi.it (in English) International Giuseppe Verdi Foundation Operas by Giuseppe Verdi Italian-language operas 1839 operas Operas Operas set in Italy Opera world premieres at La Scala