Columbia subject headings:
Harvard subject headings:
Art, European--19th century--Themes, motives--Exhibitions.
Danube River Valley--In art--Exhibitions.
Danube River--In art--Exhibitions.
Rivers in art--Exhibitions.
Princeton subject headings:
Danube River Valley--In art--Exhibitions.
Danube River--In art--Exhibitions.
Painting, European--19th century--Exhibitions.
Rivers in art--Exhibitions.