REMOVE

1. workers
2. rubbish
3. tools
4. railroads
5. fields (land)

WHAT

1. automobiles (1)
2. buildings (structures) (1)
3. exterior views (1)
4. fences (1)
5. hills (1)
6. horizon line (1)
7. landscapes (representatio … (1)
8. men (male humans) (1)
9. pipes (conduits) (1)
10. roads (1)
11. sidewalks (1)
12. signs (declatory or adver … (1)
13. silver gelatin (1)
14. sky (1)
15. storefronts (1)
16. townscapes (representatio … (1)
17. utility poles (1)
18. Visual Works (hierarchy n … (1)
19. women (1)

Less

WHERE

1. Alberta, Canada (1)

WHO

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

WHEN

1. 1920 (1)
2. 1945 (1)
3. between circa 1929 and ci … (1)