REMOVE

1. plants
2. banks (landforms)
3. stairs
4. utility poles

WHAT

1. barns (1)
2. birds (animals) (1)
3. black-and-white film (1)
4. buildings (structures) (1)
5. doors (1)
6. exterior views (1)
7. farmhouses (1)
8. farms (1)
9. farmyards (1)
10. fences (1)
11. fields (land) (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. trees (1)
20. Visual Works (hierarchy n … (1)
21. windows (1)
22. yards (areas) (1)

WHO

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

WHEN

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