REMOVE

1. trees
2. landscapes (representations)
3. ladders

WHAT

1. autumn (1)
2. barns (1)
3. black-and-white film (1)
4. buildings (structures) (1)
5. color film (film) (1)
6. cornstalk (1)
7. exterior views (1)
8. farms (1)
9. fields (land) (1)
10. forests (plant communitie … (1)
11. freight cars (1)
12. houses (1)
13. interior views (1)
14. plants (1)
15. porches (1)
16. railroads (1)
17. rails (transit system ele … (1)
18. rubbish (1)
19. sky (1)
20. soil (1)
21. trains (vehicle groupings … (1)
22. trucks (1)
23. utility poles (1)
24. Visual Works (hierarchy n … (2)
25. wheels (components) (1)
26. wrecks (sites) (1)

WHERE

1. New Windsor, Maryland (2)

WHO

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

More 

WHEN

1. 1969 (1)
2. 1970 (1)