REMOVE

1. rivers
2. mountains
3. rock
4. machinery

WHAT

1. Visual works (hierarchy n … (2)
2. abstraction (2)
3. green (2)
4. oil pastels (2)
5. red (2)

WHERE

1. San Francisco, California (2)

WHO

1. Still, Clyfford (2)

WHEN

1. 1949 (2)