REMOVE

1. branches (plant components)
2. garages
3. black-and-white film
4. trees

WHAT

1. artists (visual artists) (1)
2. automobiles (2)
3. banks (landforms) (2)
4. beards (1)
5. berets (1)
6. boys (2)
7. brick (clay product) (2)
8. buildings (structures) (2)
9. bushes (5)
10. children (2)
11. coats (garments) (2)
12. cupolas (1)
13. doors (1)
14. driveways (1)
15. exterior views (5)
16. fences (1)
17. fields (land) (2)
18. forests (plant communitie … (2)
19. freight cars (2)
20. gardens (open spaces) (1)
21. hats (1)
22. hills (2)
23. houses (1)
24. landscapes (representatio … (1)
25. men (male humans) (3)
26. pipes (smoking equipment) (1)
27. plants (5)
28. portraits (1)
29. railroads (2)
30. rails (transit system ele … (2)
31. roads (2)
32. rock (2)
33. rubbish (2)
34. shadows (1)
35. sidewalks (1)
36. signs (declatory or adver … (2)
37. sky (4)
38. soil (2)
39. sunlight (1)
40. trains (vehicle groupings … (2)
41. utility poles (2)
42. Visual Works (hierarchy n … (5)
43. wheels (components) (2)
44. windows (4)
45. workers (2)
46. wrecks (sites) (1)
47. yards (areas) (3)

WHERE

1. New Windsor, Maryland (5)

WHO

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

More 

WHEN

1. 1966 (2)
2. 1969 (2)
3. 1971 (1)