Columbia subject headings:
Harvard subject headings:
Cities and towns--United States--History--19th century.
Cities and towns--United States--History--20th century.
City planning--United States--History--19th century.
City planning--United States--History--20th century
Princeton subject headings:
Cities and towns--United States--History--19th century.
Cities and towns--United States--History--20th century.
City planning--United States--History--19th century.
City planning--United States--History--20th century.