Columbia subject headings:
Human ecology--Ontario--Trent River Valley--History--19th century.
Trent River Valley (Ont.)--History--19th century.
Harvard subject headings:
Frontier and pioneer life--Ontario--Trent River Valley.
Human ecology--Ontario--Trent River Valley--History--19th century.
Natural history--Ontario--Trent River Valley.
Trent River Valley (Ont.)--Environmental conditions.
Trent River Valley (Ont.)--History, Local.
Trent River Valley (Ont.)--History--19th century.
Trent River Valley (Ont.)--Social conditions--19th century.
Princeton subject headings:
Human ecology--Ontario--Trent River Valley--History--19th century.
Trent River Valley (Ont.)--History--19th century.