Columbia subject headings:
African American pioneers--West (U.S.)
African American trappers--West (U.S.)
African Americans--Biography.
Frontier and pioneer life--West (U.S.)
Harvard subject headings:
African American pioneers--West (U.S.)
African American trappers--West (U.S.)
African Americans--Biography
Frontier and pioneer life--West (U.S.)
Princeton subject headings:
African American pioneers--West (U.S.).
African American trappers--West (U.S.).
African Americans--Biography.
Frontier and pioneer life--West (U.S.)