Columbia subject headings:
City planning--United States--History--19th century.
City planning.
Olmsted, Frederick Law, 1822-1903.
Parks--United States--History--19th century.
Harvard subject headings:
City planning--United States--History--19th century.
Olmsted, Frederick Law, 1822-1903
Parks--United States--History--19th century.
Princeton subject headings:
City planning--United States--History--19th century.
Olmsted, Frederick Law, 1822-1903.
Parks--United States--History--19th century.