Columbia subject headings:
Italians--United States--History--19th century.
Italians--United States--History--20th century.
Italy--Emigration and immigration--History--19th century.
Italy--Emigration and immigration--History--20th century.
United States--Emigration and immigration--History--19th century.
United States--Emigration and immigration--History--20th century.
Harvard subject headings:
Italians--United States--History--19th century.
Italians--United States--History--20th century.
Italy--Emigration and immigration--History--19th century.
Italy--Emigration and immigration--History--20th century.
United States--Emigration and immigration--History--19th century.
United States--Emigration and immigration--History--20th century.
Princeton subject headings:
Italians--United States--History--19th century.
Italians--United States--History--20th century.
Italy--Emigration and immigration--History--19th century.
Italy--Emigration and immigration--History--20th century.
United States--Emigration and immigration--History--19th century.
United States--Emigration and immigration--History--20th century.