REMOVE

1. machinery
2. farming
3. hands

WHAT

1. Visual works (hierarchy n … (2)
2. blue (2)
3. farms (2)
4. figures (2)

More 

WHERE

1. Pullman, Washington (2)

WHO

1. Still, Clyfford (2)

WHEN

1. 1935 (1)
2. 1936 (1)