Columbia subject headings:
Landscape painting, American--19th century--Exhibitions.
Landscape painting, American--20th century--Exhibitions.
Landscape painting, American--Exhibitions.
Harvard subject headings:
Landscape painting, American--19th century--Exhibitions.
Landscape painting, American--20th century--Exhibitions.
Princeton subject headings:
Landscape painting, American--19th century--Exhibitions.
Landscape painting, American--Exhibitions.
Landscape painting--20th century--Exhibitions.