Columbia subject headings:
Harvard subject headings:
Archives--Germany--Westphalia--History.
Westphalia (Germany)--History--Sources.
Princeton subject headings:
Archives--Germany--Westphalia--Catalogs.
Catalogs.
Landesarchiv Nordrhein-Westfalen--Catalogs.
Nordrhein-Westfälisches Staatsarchiv Münster--Catalogs.
Westphalia (Germany)--History--Sources.