Columbia subject headings:
Haydn, Joseph, 1732-1809--Exhibitions.
Music--Germany--Bonn--Exhibitions.
Harvard subject headings:
Haydn, Joseph, 1732-1809--Exhibitions.
Music--Germany--Bonn--Exhibitions.
Princeton subject headings:
Haydn, Joseph, 1732-1809--Exhibitions.
Music--Germany--Bonn--Exhibitions.