Columbia subject headings:
Missionaries--China--Biography.
Missionaries--United States--Biography.
Service, Grace, 1879-1954.
Service, Robert Roy, 1879-1935.
Harvard subject headings:
Missionaries--China--Biography
Missionaries--United States--Biography
Service, Grace, 1879-
Service, Robert R., 1879-1935.
Princeton subject headings:
Missionaries--China--Biography.
Missionaries--United States--Biography.
Service, Grace, b. 1879.
Service, Robert R., 1879-1935.