Columbia subject headings:
Harvard subject headings:
Agricultural colonies--Ontario, Southern--History.
Agriculture--Ontario--History--19th century.
Land settlement--Ontario, Southern--History.
Land settlement--Ontario--History--19th century.
Land use--Ontario, Southern--History.
Land use--Ontario--History--19th century.
Landscape changes--Ontario, Southern--History.
Landscape changes--Ontario--History--19th century.
Ontario--History--19th century.
Princeton subject headings:
Agriculture--Ontario--History--19th century.
Land settlement--Ontario--History--19th century.
Land use--Ontario--History--19th century.
Landscape changes--Ontario--History--19th century.
Ontario--History--19th century.