Columbia subject headings:
Color in art.
Landscape painting, American--California, Northern--20th century.
Landscape painting, American--California, Northern.
Society of Six.
Harvard subject headings:
Color in art.
Landscape painting, American--California, Northern.
Landscape painting--20th century--California, Northern.
Society of Six.
Princeton subject headings:
Color in art.
Landscape painting, American--California, Northern.
Landscape painting--20th century.
Society of Six.