• 8 Music Library (Mills)

• 8 Videos, Slides, Films

• 5 Operas

• 4 Domingo, Plácido, 1941-
• 3 Royal Opera House (London, England)
• 2 Adami, Giuseppe, 1878-1946
• 2 British Broadcasting Corporation. Television Service
• 2 Giacosa, Giuseppe, 1847-1906
• 2 Illica, Luigi, 1857-1919
• 2 Kultur International Films
• 2 Large, Brian
• 2 Marton, Eva
• 2 NVC Arts (Firm)
• 2 Teatro alla Scala
• 1 Allen, Thomas, 1944-
• 1 Andermann, Andrea
• 1 Belasco, David, 1853-1931
• 1 Buffoli, Mauro
• 1 Burton, Humphrey, 1931-
• 1 Cappuccilli, Piero
• 1 Carroli, Silvano
• 1 Civinini, G. (Guelfo), 1873-1954
• 1 Cotrubas, Ileana
• 1 Covent Garden Video Productions
• 1 Dvorský, Peter, 1951-
• 1 Faggioni, Piero
• 1 Forzano, Giovacchino

Limit year range