REMOVE

1. birds (animals)
2. fields (land)
3. farmhouses
4. driveways
5. trees

WHAT

1. banks (landforms) (1)
2. barns (1)
3. black-and-white film (1)
4. buildings (structures) (1)
5. farms (1)
6. farmyards (1)
7. fences (1)
8. forests (plant communitie … (1)
9. landscapes (representatio … (1)
10. plants (1)
11. roads (1)
12. sky (1)
13. Visual Works (hierarchy n … (1)

WHO

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

WHEN

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