Columbia subject headings:
Alsace (France)--Church history.
Catholic Church--Relations--Protestant churches.
Church buildings--Interdenominational use--France--Alsace--History.
Protestant churches--Relations--Catholic Church.
Harvard subject headings:
Alsace (France)--Church history.
Catholic Church--Relations--Protestant churches.
Church buildings--Interdenominational use--France--Alsace--History.
Protestant churches--Relations--Catholic Church
Princeton subject headings: