REMOVE

1. rock
2. sky
3. mountains
4. hills

WHAT

1. Visual works (hierarchy n … (1)
2. dogs (animals) (1)
3. graphite pencils (1)
4. hats (1)
5. studies (1)

WHO

1. Still, Clyfford (1)

WHEN

1. 1925 (1)
2. 1931 (1)
3. circa 1925–31 (1)