REMOVE

1. hills
2. landscapes (representations)
3. farmhouses
4. farms
5. clouds

WHAT

1. barns (1)
2. black-and-white film (1)
3. buildings (structures) (1)
4. exterior views (1)
5. fields (land) (1)
6. forests (plant communitie … (1)
7. groves (plant communities … (1)
8. plants (1)
9. sheds (storage structures … (1)
10. sky (1)
11. trees (1)
12. 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)