Forbes. In fact, according to Casaglia, Gherardo (2005). "Otello,8 September 1977". L'Almanacco di Gherardo Casaglia (in Italian)., Raffanti had already performed in 1977 the minor role of Roderigo in Verdi's Otello at the War Memorial Opera House in San Francisco.
Casaglia, Gherardo (2005). "Parisina,18 May 1990". L'Almanacco di Gherardo Casaglia (in Italian).