Columbia subject headings:
Bavaria (Germany)--History--Sources--Catalogs.
Cologne (Germany)--History--Sources--Catalogs.
Wittelsbach family.
Harvard subject headings:
Bavaria (Germany)--History--Sources--Catalogs.
Cologne (Germany)--History--Sources--Catalogs.
Wittelsbach, House of.
Princeton subject headings:
Cologne (Germany)--History--Sources--Bibliography.