Columbia subject headings:
Harvard subject headings:
Baden-Württemberg (Germany)--History--Exhibitions.
Freiburg im Breisgau (Germany)--History--Exhibitions.
Nobility--Germany--Baden-Württemberg--History.
Nobility--Germany--Freiburg im Breisgau--Exhibitions.
Nobility--Germany--Freiburg im Breisgau--History.
Zähringen family--History--Exhibitions.
Princeton subject headings:
Baden (Markgrafschaft)--History--Congresses.
Zähringen, House of--Congresses.