Columbia subject headings:
United States--Census, 1950--Indexes.
United States--Census, 1960--Indexes.
United States--Census, 1970--Indexes.
United States--Census, 1980--Indexes.
United States--Census--Indexes.
United States--Population--History--20th century--Sources--Indexes.
Harvard subject headings:
United States--Census, 1950--Indexes.
United States--Census, 1960--Indexes.
United States--Census, 1970--Indexes.
United States--Census, 1980--Indexes.
United States--Census--Indexes.
United States--Population--History--20th century--Sources--Indexes.
Princeton subject headings:
United States--Census, 17th, 1950--Indexes.
United States--Census, 18th, 1960--Indexes.
United States--Census, 19th, 1970--Indexes.
United States--Census, 20th, 1980--Indexes.
United States--Census--Indexes.
United States--Population--History--20th century--Sources--Indexes.