REMOVE

1. rock
2. paths
3. sky
4. roads
5. soil
6. 1937

WHAT

1. blue (3)
2. brown (1)
3. clouds (2)
4. farming (3)
5. farms (1)
6. fences (1)
7. figures (3)
8. grain elevators (1)
9. green (1)
10. landscapes (representatio … (2)
11. machinery (1)
12. maroon (1)
13. oil paint (3)
14. replicas (1)
15. trains (vehicle groupings … (1)
16. Visual works (hierarchy n … (3)
17. wheat straw (1)
18. white (1)
19. workers (2)
20. yellow (3)

Less

WHERE

1. Killam, Alberta, Canada (3)

WHO

1. Still, Clyfford (3)

WHEN

1. 1929 (3)