Columbia subject headings:
Harvard subject headings:
Brandenburg (Germany : State)--History--Sources--Bibliography--Catalogs.
Brandenburgisches Landeshauptarchiv Potsdam--Catalogs.
Knights of Malta--Germany--Brandenburg--History--Sources--Bibliography--Catalogs.
Knights of Malta. Ballei Brandenburg--Archives--Catalogs.
Princeton subject headings:
Brandenburg (Germany : State)--Church history.
Brothers Hospitallers of St. John of God--Germany--Brandenburg.
Knights of Malta--Germany.