Columbia subject headings:
Christian sects--Congresses.
Reformation--Congresses.
Harvard subject headings:
Confession--History--16th century--Congresses.
Confession--History--17th century--Congresses.
Europe--Church history--16th century--Congresses.
Europe--Church history--17th century--Congresses.
Reformation--Congresses
Princeton subject headings:
Christian sects--Congresses.
Reformation--Congresses.