REMOVE

1. sky
2. windows
3. backdrops
4. automobiles

WHAT

1. artists (visual artists) (1)
2. audiences (1)
3. black-and-white film (2)
4. brick (clay product) (2)
5. buildings (structures) (1)
6. campuses (2)
7. chairs (furniture forms) (1)
8. colleges (buildings) (2)
9. commencements (2)
10. exterior views (2)
11. eyeglasses (1)
12. fences (2)
13. flags (2)
14. hats (1)
15. men (male humans) (2)
16. photographers (1)
17. plants (2)
18. platforms (general) (1)
19. podiums (platforms) (2)
20. portraits (1)
21. railroad stations (2)
22. robes (main garments) (2)
23. shadows (1)
24. sitting (1)
25. stages (performances spac … (2)
26. students (1)
27. studios (work spaces) (1)
28. sunlight (1)
29. train sheds (2)
30. trains (vehicle groupings … (1)
31. Visual Works (hierarchy n … (2)
32. women (2)

WHEN

1. 1967 (2)