Columbia subject headings:
Fur trade--West (U.S.)
Southwest, New--History.
West (U.S.)--History.
Harvard subject headings:
Fur trade--West (U.S.)
Southwest, New--History.
West (U.S.)--History.
Princeton subject headings:
Fur trade--West (U.S.).
Southwest, New--History.
West (U.S.)--History.