REMOVE

1. hats
2. tipis
3. barriers
4. fields (land)

WHAT

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

WHERE

1. San Francisco, California (1)

WHO

1. Still, Clyfford (1)

WHEN

1. 1948 (1)
2. 1949 (1)
3. between 1948 and 1949 (1)