REMOVE

1. plants
2. automobiles
3. fields (land)
4. trains (vehicle groupings)
5. rubbish
6. boys

WHAT

1. banks (landforms) (1)
2. barns (1)
3. birds (animals) (1)
4. black-and-white film (1)
5. buildings (structures) (1)
6. doors (1)
7. exterior views (1)
8. farmhouses (1)
9. farms (1)
10. farmyards (1)
11. fences (1)
12. forests (plant communitie … (1)
13. landscapes (representatio … (1)
14. porches (1)
15. roads (1)
16. sidewalks (1)
17. sky (1)
18. soil (1)
19. stairs (1)
20. trees (1)
21. utility poles (1)
22. Visual Works (hierarchy n … (1)
23. windows (1)
24. yards (areas) (1)

WHO

1. Campbell, Sandra L. Still (1)
2. Sandra L. Still Campbell; … (1)

WHEN

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