Columbia subject headings:
Indians of North America--Northwest, Canadian.
Natural history--Northwest, Canadian.
Northwest Passage.
Northwest, Canadian--Description and travel.
Harvard subject headings:
Indians of North America--Northwest, Canadian.
Natural history--Northwest, Canadian.
Northwest Passage.
Northwest, Canadian--Description and travel.
Princeton subject headings:
Indians of North America--Northwest, Canadian.
Natural history--Northwest, Canadian.
Northwest Passage.
Northwest, Canadian--Description and travel.