REMOVE

1. machinery
2. construction equipment
3. rivers
4. houses
5. barriers

WHAT

1. artists (visual artists) (1)
2. barns (1)
3. benches (furniture) (1)
4. black-and-white film (1)
5. buildings (structures) (1)
6. bushes (1)
7. clouds (1)
8. columns (architectural el … (1)
9. daughters (1)
10. exterior views (1)
11. farmhouses (1)
12. fields (land) (1)
13. fronts (architectural) (1)
14. hills (1)
15. landscapes (representatio … (1)
16. men (male humans) (1)
17. plants (1)
18. porches (1)
19. roads (1)
20. shadows (1)
21. sheds (storage structures … (1)
22. silhouettes (1)
23. sky (1)
24. studios (work spaces) (1)
25. trees (1)
26. utility poles (1)
27. Visual Works (hierarchy n … (1)
28. wells (structures) (1)
29. women (1)
30. woods (plant communities) (1)
31. yards (areas) (1)

WHO

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

WHEN

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