Columbia subject headings:
History in opera.
Medievalism--Europe--History--17th century.
Medievalism--Europe--History--18th century.
Medievalism--Germany--History--17th century.
Medievalism--Germany--History--18th century.
Middle Ages--Songs and music.
Opera--Europe--17th century.
Opera--Europe--18th century.
Opera--Germany--17th century.
Opera--Germany--18th century.
Harvard subject headings:
History in opera.
Medievalism in art.
Middle Ages--Songs and music.
Opera--Europe--17th century.
Opera--Europe--18th century.
Opera--Germany--17th century.
Opera--Germany--18th century.
Princeton subject headings:
History in opera.
Medievalism--Europe--History--17th century.
Medievalism--Europe--History--18th century.
Medievalism--Germany--History--17th century.
Medievalism--Germany--History--18th century.
Middle Ages--Songs and music.
Opera--Europe--17th century.
Opera--Europe--18th century.
Opera--Germany--17th century.
Opera--Germany--18th century.