REMOVE

1. fathers
2. soil
3. farming
4. labor

WHAT

1. blue (1)
2. clouds (1)
3. grain elevators (1)
4. green (1)
5. landscapes (representatio … (1)
6. oil paint (1)
7. railroads (1)
8. red (1)
9. trains (vehicle groupings … (1)
10. Visual works (hierarchy n … (1)
11. yellow (1)

Less

WHERE

1. Pullman, Washington (1)

WHO

1. Still, Clyfford (1)

WHEN

1. 1932 (1)