REMOVE

1. farms
2. clouds
3. houses
4. rivers

WHAT

1. Visual works (hierarchy n … (1)
2. abstraction (1)
3. black (1)
4. gray (1)
5. oil paint (1)

WHERE

1. San Francisco, California (1)

WHO

1. Still, Clyfford (1)

WHEN

1. 1947 (1)