Columbia subject headings:
Frederick II, Holy Roman Emperor, 1194-1250--Exhibitions.
Frederick II, Holy Roman Emperor, 1194-1250--Homes and haunts--Italy--Naples (Kingdom)--Exhibitions.
Frederick II, Holy Roman Emperor, 1194-1250--Homes and haunts--Italy--Sicily--Exhibitions.
Naples (Kingdom)--Civilization--Exhibitions.
Sicily (Italy)--Civilization--Exhibitions.
Harvard subject headings:
Art, Medieval--Italy--Exhibitions.
Frederick II, Holy Roman Emperor, 1194-1250--Exhibitions.
Holy Roman Empire--History--Frederick II, 1215-1250--Exhibitions.
Naples (Kingdom)--History--1016-1268--Exhibitions.
Sicily (Italy)--History--1194-1282--Exhibitions.
Princeton subject headings:
Frederick II, Holy Roman Emperor, 1194-1250--Exhibitions.
Naples (Kingdom)--Civilization--Exhibitions.
Sicily (Italy)--Civilization--Exhibitions.