REMOVE

1. rivers
2. farming
3. boats

WHAT

1. black-and-white film (1)
2. buildings (structures) (1)
3. bushes (1)
4. exterior views (1)
5. farms (1)
6. fences (1)
7. fields (land) (1)
8. freight cars (1)
9. grain elevators (1)
10. landscapes (representatio … (1)
11. paths (1)
12. plants (1)
13. platforms (general) (1)
14. railroads (1)
15. roads (1)
16. signs (declatory or adver … (1)
17. sky (1)
18. trains (vehicle groupings … (1)
19. utility poles (1)
20. Visual Works (hierarchy n … (1)

Less

WHERE

1. Killam, Alberta, Canada (1)

WHO

1. Clyfford Still; Still, Cl … (1)
2. Still, Clyfford (1)

WHEN

1. 1920 (1)
2. 1940 (1)
3. between 1920 - 1940 (1)