Columbia subject headings:
Harvard subject headings:
Clark, William, 1770-1838--Travel--West (U. S.).
Columbia River--Description and travel.
Columbia River.
Gass, Patrick, 1771-1870.
Lewis and Clark Expedition (1804-1806)
Lewis and Clark Expedition (1804-1806)--Bibliography.
Lewis, Meriwether, 1774-1809--Travel--West (U. S.).
Missouri River--Description and travel.
Missouri River.
West (U.S.)--Description and travel.
West (U.S.)--Discovery and exploration.
West (U.S.)--History--To 1848.
Princeton subject headings:
Columbia River.
Gass, Patrick, 1771-1870.
Lewis and Clark Expedition (1804-1809)
Lewis and Clark Expedition (1804-1809)--Bibliography.
Missouri River.
West (U.S.)--Description and travel.