Columbia subject headings:
Harvard subject headings:
Pistoia (Italy)--Emigration and immigration.
Princeton subject headings:
Immigrants--United States--History--19th century.
Immigrants--United States--History--20th century.
Italian Americans--History--19th century.
Italian Americans--History--20th century.
Pistoia (Italy : Province)--Emigration and immigration--History.
Sambuca Pistoiese (Italy)--Emigration and immigration--History.
United States--Emigration and immigration--History.