Columbia subject headings:
Cowboys.
Frontier and pioneer life--Texas.
Frontier and pioneer life--West (U.S.)
Harvard subject headings:
Cowboys
Frontier and pioneer life--Texas
Frontier and pioneer life--West (U.S.)
Harris, Frank, 1855-1931.
Princeton subject headings:
Cowboys.
Frontier and pioneer life--Texas.
Frontier and pioneer life--West (U.S.)