REMOVE

1. sky
2. trees
3. farmyards
4. plants

WHAT

1. Visual works (hierarchy n … (2)
2. farming (2)
3. farms (2)
4. figures (2)
5. gray (2)

More 

WHERE

1. Pullman, Washington (1)

WHO

1. Still, Clyfford (2)

WHEN

1. 1927 (1)
2. 1935 (1)