Columbia subject headings:
Harvard subject headings:
Saxony (Germany)--History--Exhibitions.
Trade routes--Germany--History--Exhibitions.
Trade routes--Poland--History--Exhibitions.
Via Regia (Germany and Poland)--History--Exhibitions.
Princeton subject headings:
Saxony (Germany)--History--Congresses.
Saxony (Germany)--History--Exhibitions.
Trade routes--Germany--History--Congresses.
Trade routes--Germany--History--Exhibitions.
Trade routes--Poland--History--Congresses.
Trade routes--Poland--History--Exhibitions.
Via Regia (Germany and Poland)--History--Congresses.
Via Regia (Germany and Poland)--History--Exhibitions.