Columbia subject headings:
Cities and towns--United States--History--20th century.
Metropolitan areas--United States--History--20th century.
Urban policy--United States.
Harvard subject headings:
Cities and towns--United States--History--20th century.
Metropolitan areas--United States--History--20th century.
Urban policy--United States
Princeton subject headings:
Cities and towns--United States--History--20th century.
Metropolitan areas--United States--History--20th century.
Urban policy--United States.