REMOVE

1. hills
2. roads
3. buildings (structures)
4. rock
5. automobiles
6. trees
7. wheels (components)

WHAT

1. artists (visual artists) (1)
2. banks (landforms) (1)
3. black-and-white film (3)
4. boys (1)
5. branches (plant component … (1)
6. brick (clay product) (1)
7. bushes (2)
8. children (1)
9. clouds (1)
10. coats (garments) (3)
11. daughters (1)
12. driveways (1)
13. exterior views (2)
14. farmhouses (1)
15. farms (1)
16. fields (land) (2)
17. forests (plant communitie … (1)
18. freight cars (2)
19. garages (1)
20. hats (3)
21. houses (1)
22. lamps (lighting devices) (1)
23. men (male humans) (3)
24. neighborhoods (1)
25. parking lots (1)
26. pipes (smoking equipment) (1)
27. plants (3)
28. portraits (1)
29. purses (ladies' accessori … (1)
30. railroads (2)
31. rails (transit system ele … (2)
32. rubbish (3)
33. scarves (costume accessor … (1)
34. sheds (storage structures … (1)
35. sidewalks (1)
36. signs (declatory or adver … (2)
37. sky (3)
38. soil (2)
39. trains (vehicle groupings … (2)
40. trucks (1)
41. utility poles (2)
42. Visual Works (hierarchy n … (3)
43. windows (2)
44. women (2)
45. woods (plant communities) (1)
46. workers (2)
47. wrecks (sites) (1)
48. yards (areas) (1)

WHERE

1. New Windsor, Maryland (2)
2. Westminster, Maryland (1)

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)
2. 1961 (1)
3. after 1961 (1)