Columbia subject headings:
Conrad II, Holy Roman Emperor, approximately 990-1039.
Crown jewels--Germany.
Crowns.
Jewelry, Medieval--Germany.
Harvard subject headings:
Conrad II, Holy Roman Emperor, approximately 990-1039.
Crown jewels--Germany
Crowns.
Jewelry, Medieval--Germany.
Princeton subject headings:
Crowns.
Franconian House.
Regalia (Insignia)--Germany.