Columbia subject headings:
Composers--Italy--Correspondence.
Puccini, Giacomo, 1858-1924--Correspondence.
Harvard subject headings:
Composers--Italy--Correspondence
Personal correspondence.
Puccini, Giacomo, 1858-1924. Correspondence
Princeton subject headings:
Composers--Italy--Correspondence.
Puccini, Giacomo, 1858-1924. Correspondence.