Columbia subject headings:
Catholic Church--United States--History--20th century.
Catholics--United States--History--20th century.
Christian sociology--Catholic Church--United States--History--20th century.
Harvard subject headings:
Catholic Church--United States--History--20th century.
Catholics--United States--History--20th century.
Christian sociology--Catholic Church--United States--History--20th century.
Princeton subject headings:
Catholic Church--United States--History--20th century.
Catholics--United States--History--20th century.
Christian sociology--Catholic Church--United States--History--20th century.