Columbia subject headings:
Harvard subject headings:
Gatti-Casazza, Giulio, 1869-1940.
Musicians--Biography
Musicians--Correspondence
Opera--New York (State)--New York
Princeton subject headings:
Gatti-Casazza, Giulio, 1869-1940.
Musicians--Correspondence, reminiscences, etc.
Opera--New York (State)--New York.