REMOVE

1. roads
2. trains (vehicle groupings)
3. 1940

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. signs (declatory or adver … (1)
16. sky (1)
17. utility poles (1)
18. Visual Works (hierarchy n … (1)

WHERE

1. Killam, Alberta, Canada (1)

WHO

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

WHEN

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