REMOVE

1. rock
2. branches (plant components)
3. soil

WHAT

1. automobiles (1)
2. banks (landforms) (1)
3. black-and-white film (2)
4. boys (1)
5. brick (clay product) (1)
6. buildings (structures) (2)
7. bushes (1)
8. children (1)
9. close-up views (1)
10. exterior views (1)
11. fields (land) (1)
12. forests (plant communitie … (1)
13. freight cars (2)
14. garages (1)
15. hills (1)
16. ladders (1)
17. landscapes (representatio … (1)
18. men (male humans) (1)
19. plants (2)
20. railroads (2)
21. rails (transit system ele … (2)
22. roads (1)
23. rubbish (1)
24. signs (declatory or adver … (1)
25. sky (2)
26. trains (vehicle groupings … (2)
27. trees (2)
28. utility poles (1)
29. Visual Works (hierarchy n … (2)
30. wheels (components) (2)
31. windows (1)
32. workers (1)
33. wrecks (sites) (1)

WHERE

1. New Windsor, Maryland (2)

WHO

1. Campbell, Sandra L. Still (2)
2. Clyfford Still; Still, Cl … (2)
3. Sandra L. Still Campbell; … (2)
4. Still, Clyfford (2)

More 

WHEN

1. 1969 (2)