A collection of Maria Callas memorabilia from her husband's estate, including letters, photographs and musical scores, will be auctioned later this year.
The collection includes 63 love letters from Callas to industrialist Giovanni Battista Meneghini, who was married to the soprano during her rise to operatic fame, Sotheby's Milan said Monday.
Meneghini married Callas in 1949. She left him for Greek shipping magnate Aristotle Onassis a decade later.
Letters from friends including Leonard Bernstein and Franco Zeffirelli; 300 musical scores, many including handwritten notes by Callas; concert gowns; and photos of Callas onstage and in the company of dignitaries such as President Kennedy will also be sold.
The auction will be held Dec. 12. The collection will be on public display in Milan on Dec. 7, Dec. 10 and Dec. 11, the auction house said.