REMOVE

1. roads
2. trees
3. sky
4. snow (precipitation)

WHAT

1. abstraction (1)
2. black (1)
3. gray (1)
4. oil paint (1)
5. orange (1)
6. Visual works (hierarchy n … (1)
7. white (1)
8. yellow (1)

Less

WHERE

1. San Francisco, California (1)

WHO

1. Still, Clyfford (1)

WHEN

1. 1952 (1)