REMOVE

1. roads
2. houses
3. black-and-white film
4. windows

WHAT

1. atmospheric perspective (2)
2. barns (2)
3. branches (plant component … (1)
4. buildings (structures) (2)
5. bushes (1)
6. churches (buildings) (1)
7. domes (architectural elem … (1)
8. doors (1)
9. exterior views (3)
10. farms (1)
11. fences (1)
12. fields (land) (2)
13. forests (plant communitie … (2)
14. freight cars (1)
15. garages (1)
16. hills (1)
17. horizon line (2)
18. ladders (1)
19. landscapes (representatio … (2)
20. neighborhoods (1)
21. plants (3)
22. porches (1)
23. railroads (1)
24. rails (transit system ele … (1)
25. rooftops (2)
26. scaffolds (1)
27. signs (declatory or adver … (1)
28. sky (3)
29. soil (1)
30. towers (building division … (2)
31. trains (vehicle groupings … (1)
32. trees (3)
33. trucks (1)
34. utility poles (2)
35. Visual Works (hierarchy n … (3)
36. wheels (components) (1)
37. wrecks (sites) (1)
38. yards (areas) (1)

WHERE

1. New Windsor, Maryland (3)

WHO

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

More 

WHEN

1. 1967 (2)
2. 1969 (1)
3. ca. 1967 (1)