Columbia subject headings:
Longsworth family.
Longsworth, Basil Nelson.
Oregon National Historic Trail.
Overland journeys to the Pacific.
West (U.S.)--Description and travel.
West (U.S.)--History--1848-1860.
Harvard subject headings:
Oregon National Historic Trail.
Overland journeys to the Pacific
Princeton subject headings:
Oregon National Historic Trail.
Overland journeys to the Pacific.