Columbia subject headings:
Catholic Church--Teaching office.
Catholic Church--United States--Discipline--History.
Catholic Church--United States--Doctrines--Catholic authors.
Catholic Church--United States--History--20th century.
Democracy--Religious aspects--Christianity--United States.
United States--Church history--20th century.
Harvard subject headings:
Catholic Church--Government.
Catholic Church--United States--Bishops--Political activity.
Catholic Church--United States--Bishops.
Catholic Church--United States--Pastoral letters and charges.
Catholic Church--United States.
Church and social problems.
Princeton subject headings:
Catholic Church--United States--Discipline--History.
Catholic Church--United States--Doctrines.
Catholic Church--United States--History--20th century.
Democracy--Religious aspects--Christianity.
United States--Church history--20th century.