Columbia subject headings:
Church archives--Europe--Congresses.
Church history--Modern period, 1500---Congresses.
Harvard subject headings:
Church archives--Europe--Congresses.
Church history--Modern period, 1500---Congresses.
Princeton subject headings:
Church archives--Europe--Congresses.
Lutheran Church--Europe--History--Congresses.
Protestant churches--Europe--History--Congresses.