REMOVE

1. machinery
2. paths
3. soil
4. sky
5. rubbish

WHAT

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

More 

WHERE

1. Westminster, Maryland (2)

WHO

1. Still, Clyfford (2)

WHEN

1. 1974 (2)
2. 1974-06 (2)
3. Abstract Expressionist (2)