• 3 Music Library (Mills)

• 5 Sound Recordings

• 2 Vinyl Records
• 1 Compact Discs

• 3 Operas
• 1 Macbeth, King of Scotland, active 11th century

• 3 Bergonzi, Carlo
• 3 Hines, Jerome, 1921-2003
• 3 Leinsdorf, Erich, 1912-1993
• 3 Metropolitan Opera (New York, N.Y.)
• 3 Warren, Leonard, 1911-1960
• 2 Boito, Arrigo, 1842-1918
• 2 Gobbi, Tito
• 2 Maffei, Andrea, 1798-1885
• 2 Piave, Francesco Maria, 1810-1876
• 2 Serafin, Tullio, 1878-1968
• 2 Teatro dell'opera (Rome, Italy)
• 2 Vickers, Jon
• 1 Andreolli, Florindo
• 1 Kin Lop Tse Collection
• 1 Piave, Francesco, 1810-1876

Limit year range