REMOVE

1. utility poles
2. black-and-white film
3. tools
4. portraits

WHAT

1. banks (landforms) (1)
2. bushes (1)
3. coats (garments) (1)
4. freight cars (1)
5. hats (1)
6. men (male humans) (1)
7. plants (1)
8. profiles (figures) (1)
9. railroads (1)
10. rails (transit system ele … (1)
11. sky (1)
12. soil (1)
13. trains (vehicle groupings … (1)
14. trees (1)
15. Visual Works (hierarchy n … (1)
16. wheels (components) (1)
17. workers (1)
18. 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)