Columbia subject headings:
Landscape assessment--United States--History--19th century.
Landscape assessment--United States--History--20th century.
Suburbs--United States--History--19th century.
Suburbs--United States--History--20th century.
Harvard subject headings:
Landscapes--United States--History--19th century.
Landscapes--United States--History--20th century.
Suburbs--United States--History--19th century.
Suburbs--United States--History--20th century.
Princeton subject headings:
Landscape assessment--United States--History--19th century.
Landscape assessment--United States--History--20th century.
Suburbs--United States--History--19th century.
Suburbs--United States--History--20th century.