REMOVE

1. groves (plant communities)
2. hills
3. buildings (structures)
4. barns

WHAT

1. black-and-white film (1)
2. clouds (1)
3. exterior views (1)
4. farmhouses (1)
5. farms (1)
6. fields (land) (1)
7. forests (plant communitie … (1)
8. landscapes (representatio … (1)
9. plants (1)
10. sheds (storage structures … (1)
11. sky (1)
12. trees (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)