Columbia subject headings:
Catholic Church--Doctrines--History--20th century.
Catholic Church--History--1965-
Catholic Church--History--20th century.
Catholic Church--United States.
Liberalism (Religion)--Catholic Church.
Harvard subject headings:
Catholic Church--Doctrines--History--20th century.
Catholic Church--History--1965-
Church and social problems--Catholic Church--History--20th century
Princeton subject headings: