Columbia subject headings:
Harvard subject headings:
Explorers--United States--Biography
Frontier and pioneer life--San Luis Valley (Colo. and N.M.)
Hiking--San Luis Valley (Colo. and N.M.)
Pike, Zebulon Montgomery, 1779-1813.
San Luis Valley (Colo. and N.M.)--Description and travel.
Princeton subject headings:
Explorers--United States--Biography.
Frontier and pioneer life--San Luis Valley.
Hiking--San Luis Valley.
Pike, Zebulon Montgomery, 1779-1813.
San Luis Valley--Description and travel.