Columbia subject headings:
Harvard subject headings:
Archives--Germany--Methodology.
Rhineland (Germany)--Historiography.
Rhineland (Germany)--History.
Thuringia (Germany)--Historiography.
Thuringia (Germany)--History.
Princeton subject headings:
Archives--Germany--Methodology.
Rhineland (Germany)--Historiography.
Rhineland (Germany)--History.
Thuringia (Germany)--Historiography.
Thuringia (Germany)--History.