Columbia subject headings:
Explorers--United States--Biography.
Women explorers--Biography.
Harvard subject headings:
Akeley, Delia J. Denning, 1875-1970.
Boyd, Louise Arner, 1887-1972
Explorers--United States--Biography
Harrison, Marguerite, 1878-1967
Peck, Annie S. (Annie Smith), 1850-1935.
Women explorers--Biography.
Women--United States--Biography.
Princeton subject headings:
Explorers--United States--Biography.
Women explorers--Biography.