Columbia subject headings:
Harvard subject headings:
Austrians--United States--History--20th century.
Immigrants--United States--History--20th century
United States--Emigration and immigration--History--20th century.
Princeton subject headings:
Austria--Emigration and immigration--History--20th century.
Austrians--United States--History--20th century.
Immigrants--United States--History--20th century.
United States--Emigration and immigration--History--20th century.