Columbia subject headings:
Harvard subject headings:
Serrati, Giacinto Menotti, 1872-1926--Correspondence.
Serrati, Giacinto Menotti, 1872-1926.
Socialists--Italy--Biography
Socialists--Italy--Correspondence
Princeton subject headings:
Serrati, Giacinto Menotti, 1872-1926.
Socialists--Italy--Biography.