Columbia subject headings:
Actors--Italy--Correspondence.
Boito, Arrigo, 1842-1918.
Duse, Eleonora, 1858-1924.
Harvard subject headings:
Actors--Italy--Correspondence.
Boito, Arrigo, 1842-1918.
Duse, Eleonora, 1858-1924.
Princeton subject headings: