Columbia subject headings:
Color-field painting--Exhibitions.
Nicholson, Winifred, 1893-1981--Exhibitions.
Harvard subject headings:
Color-field painting--Exhibitions.
Nicholson, Winifred, 1893-1981--Exhibitions.
Princeton subject headings:
Color-field painting--Exhibitions.
Nicholson, Winifred, 1893-1981--Exhibitions.