REMOVE

1. roads
2. trees
3. bushes
4. sky
5. hills
6. ca. 1967

WHAT

1. New York (1)
2. Visual Works (hierarchy n … (1)
3. machinery (1)
4. studies (1)

WHO

1. Clyfford Still; Still, Cl … (1)
2. Still, Clyfford (1)

WHEN

1. 1923 (1)
2. 1930 (1)
3. circa 1926 (1)