Columbia subject headings:
Harvard subject headings:
Cities and towns--Germany--History--Congresses.
Collective memory--Germany--History--Congresses.
Germany--Historiography--Congresses.
Imperial cities (Holy Roman Empire)--History--Congresses.
Princeton subject headings:
Cities and towns--Germany--History--Congresses.
Collective memory--Germany--History--Congresses.
Germany--Historiography--Congresses.
Imperial cities (Holy Roman Empire)--History--Congresses.