REMOVE

1. sky
2. plants
3. rock
4. parks (recreation areas)

WHAT

1. farming (2)
2. farms (2)
3. fences (2)
4. geese (animals) (2)
5. graphite pencils (2)
6. harrow (2)
7. machinery (2)
8. studies (2)
9. Visual works (hierarchy n … (2)

Less

WHO

1. Still, Clyfford (2)

WHEN

1. 1923 (2)
2. 1927 (2)
3. circa 1923–27 (2)