Columbia subject headings:
Harvard subject headings:
Archives--Germany--Westphalia.
Landesarchiv Nordrhein-Westfalen--Catalogs.
Personal archives--Germany--Westphalia.
Westphalia (Germany)--History--Sources.
Princeton subject headings:
Archives--Germany--Westphalia.
Catalogs.
Landesarchiv Nordrhein-Westfalen--Catalogs.
Personal archives--Germany--Westphalia.
Westphalia (Germany)--History--Sources.