Columbia subject headings:
Harvard subject headings:
Greenland--Description and travel
Greenland--Description and travel--Early works to 1800.
Northwest Passage.
Spitsbergen Island (Norway)--Description and travel--Early works to 1800.
Spitsbergen Island (Norway)--Description and travel.
Whaling--Greenland--Early works to 1800.
Princeton subject headings:
Greenland--Description and travel.
Northwest Passage.
Spitsbergen Island (Norway)--Description and travel.