Columbia subject headings:
Harvard subject headings:
Brownell, Charles De Wolf, 1822-1909--Exhibitions.
Hudson River school of landscape painting--Exhibitions.
Landcape painting, American--Exhibitions.
Landscape painting, American--19th century--Exhibitions.
Watercolor painting, American--20th century--Exhibitions
Princeton subject headings:
Brownell, Charles De Wolf, 1822-1909--Exhibitions.