Columbia subject headings:
Mississippi River--Description and travel.
New Mexico--Description and travel.
United States--Discovery and exploration.
West (U.S.)--Description and travel.
Harvard subject headings:
America--Discovery and exploration.
Discoveries in geography--American.
Mississippi River--Description and travel.
New Mexico--Description and travel
United States--Discovery and exploration.
West (U.S.)--Description and travel.
Princeton subject headings:
Mississippi River--Description and travel.
New Mexico--Description and travel.
United States--Exploring expeditions.
West (U.S.)--Description and travel.