Columbia subject headings:
Harvard subject headings:
Archives--Germany (East)--History.
Brandenburg (Germany : State)--History
Brandenburgisches Landeshauptarchiv Potsdam
Thuringia (Germany)--History.
Princeton subject headings:
Archives--Germany (East)--History.
Brandenburg (Germany : State)--History.
Brandenburgisches Landeshauptarchiv Potsdam.
Thuringia (Germany)--History.