Columbia subject headings:
Korea--History--20th century.
Underwood, Horace Grant, 1917-2004.
Harvard subject headings:
Korea--History--20th Century.
Missionaries--Korea--Biography
Underwood, Horace Grant, 1917-
Princeton subject headings:
Korea--History--20th century.
Missionaries--Korea (South)--Biography.
Missionaries--United States--Biography.
Presbyterian Church--Korea--History--20th century.
Underwood, Horace Grant, 1917-2004.