REMOVE

1. black-and-white film
2. rubbish
3. barns
4. utility poles

WHAT

1. buildings (structures) (1)
2. cornstalk (1)
3. exterior views (1)
4. farms (1)
5. fields (land) (1)
6. forests (plant communitie … (1)
7. freight cars (1)
8. ladders (1)
9. landscapes (representatio … (1)
10. plants (1)
11. railroads (1)
12. rails (transit system ele … (1)
13. sky (1)
14. soil (1)
15. trains (vehicle groupings … (1)
16. trees (1)
17. trucks (1)
18. Visual Works (hierarchy n … (1)
19. wheels (components) (1)
20. wrecks (sites) (1)

WHERE

1. New Windsor, Maryland (1)

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. 1969 (1)