Columbia subject headings:
Harvard subject headings:
Church and social problems--Korea--Protestant churches--History.
Civil rights--Religious aspects--Christianity
Missionaries--Korea--Biography
Missions, Medical--Korea--History.
Missions--Educational work--Korea--History.
Princeton subject headings:
Korea--History--20th century--Sources.
Korea--Social conditions--20th century--Sources.
Missionaries--Korea--History--20th century.
Missionaries--United States--Biography.
Missions, American--Korea--History.