Columbia subject headings:
California--Gold discoveries.
Mexico--Description and travel.
Overland journeys to the Pacific.
Southwest, New--Description and travel.
United States--Description and travel.
Harvard subject headings:
California--Gold discoveries.
Mexico--Description and travel.
Overland journeys to the Pacific
Southwest, New--Description and travel.
United States--Description and travel.
Princeton subject headings:
California--Gold discoveries.
Mexico--Description and travel.
Overland journeys to the Pacific.
Southwest, New--Description and travel.
United States--Description and travel.