Columbia subject headings:
Harvard subject headings:
Natural history--Ottawa River Valley (Québec and Ont.)--Pictorial works.
Ottawa River Valley (Québec and Ont.)--Description and travel.
Ottawa River Valley (Québec and Ont.)--History.
Ottawa River Valley (Québec and Ont.)--Pictorial works.
Princeton subject headings:
Natural history--Ottawa River Valley (Quebec and Ont.)--Pictorial works.
Ottawa River Valley (Québec and Ont.)--Description and travel--Views.
Ottawa River Valley (Québec and Ont.)--History.