Columbia subject headings:
Italians--Foreign countries--History.
Italians--North America--History.
Italy--Emigration and immigration--History.
Harvard subject headings:
Italians--Foreign countries--Italy.
Italians--North America--History.
Italy--Emigration and immigration--History.
Princeton subject headings:
Italians--Foreign countries--Italy.
Italians--North America--History.
Italy--Emigration and immigration--History.