REMOVE

1. trees
2. houses
3. ladders

WHAT

1. autumn (1)
2. black-and-white film (1)
3. branches (plant component … (1)
4. color film (film) (1)
5. exterior views (1)
6. freight cars (1)
7. interior views (1)
8. landscapes (representatio … (1)
9. plants (1)
10. porches (1)
11. railroads (1)
12. rails (transit system ele … (1)
13. roads (1)
14. scaffolds (1)
15. signs (declatory or adver … (1)
16. sky (1)
17. soil (1)
18. trains (vehicle groupings … (1)
19. Visual Works (hierarchy n … (2)
20. wheels (components) (1)
21. windows (1)
22. 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)