Columbia subject headings:
American literature--History and criticism.
Italy--Civilization--20th century--American influence.
Music--United States--History and criticism.
United States--Civilization--20th century.
Harvard subject headings:
American literature--History and criticism.
Italy--Civilization--20th century--American influences.
Music--United States--History and criticism.
United States--Civilization--20th century.
Princeton subject headings: