Columbia subject headings:
Achenbach, Andreas, 1815-1910--Exhibitions.
Achenbach, Oswald, 1827-1905--Exhibitions.
Harvard subject headings:
Achenbach, Andreas, 1815-1910--Exhibitions.
Achenbach, Oswald, 1827-1905--Exhibitions.
Europe--In art--Exhibitions.
Landscape painting, European--19th century--Exhibitions.
Princeton subject headings:
Achenbach, Andreas, 1815-1910--Exhibitions.
Achenbach, Oswald, 1827-1905--Exhibitions.
Europe--In art--Exhibitions.
Landscape painting--19th century--Exhibitions.