Columbia subject headings:
Catholic Church--Northwest, Canadian--History--Sources.
Catholic Church--Northwestern States--History--Sources.
Missions--Northwest, Canadian--History--Sources.
Missions--Northwestern States--History--Sources.
Harvard subject headings:
Catholic Church--Northwest, Canadian--History--Sources.
Catholic Church--Northwestern States--History--Sources.
Missions--Northwest, Canadian--History--Sources.
Missions--Northwestern States--History--Sources.
Princeton subject headings:
Catholic Church--Northwest, Canadian--History--Sources.
Catholic Church--Northwestern States--History--Sources.
Missions--Northwest, Canadian--History--Sources.
Missions--Northwestern States--History--Sources.