Columbia subject headings:
Catholic Church--China--History--Sources.
Catholic Church--Missions--History--Sources.
Catholic Church. Pope (1914-1922 : Benedict XV). Maximum illud.
Lebbe, Vincent, 1877-1940.
Missions--China--History--Sources.
Harvard subject headings:
Catholic Church--China--History--Sources.
Catholic Church--Missions--History--Sources.
Catholic Church. Pope (1914-1922 : Benedict XV). Maximum illud (30 Nov. 1919)
Lebbe, Vincent, 1877-1940.
Missions--China--History--Sources.
Princeton subject headings:
Catholic Church--China--History--Sources.
China--Church history--20th century--Sources.
Lebbe, Vincent, 1877-1940.
Missionaries--China--Correspondence.