Columbia subject headings:
Alemanni (Germanic people)--History--Congresses.
Louis I, Emperor, 778-840--Congresses.
Schwenningen am Neckar (Germany)--History--Congresses.
Villingen (Germany)--History--Congresses.
Harvard subject headings:
Alemanni (Germanic people)--History--Congresses.
Louis I, Emperor, 778-840--Congresses.
Villingen-Schwenningen (Germany)--History--To 1500--Congresses.
Villingen-Schwenningen (Germany)--History--To 1500--Sources--Congresses.
Princeton subject headings:
Alemanni (Germanic people)--History--Congresses.
Louis I, Emperor, 778-840--Congresses.
Schwenningen am Neckar (Germany)--History--Congresses.
Villingen (Germany)--History--Congresses.