Columbia subject headings:
Missionaries--Papua New Guinea--Biography.
Missionaries--United States--Biography.
Ross, William, 1895-1973.
Harvard subject headings:
Missionaries--Papua New Guinea--Biography
Missionaries--United States--Biography
Ross, William, 1895-1973.
Princeton subject headings:
Missionaries--Papua New Guinea--Biography.
Missionaries--United States--Biography.
Ross, William, 1895-1973.