REMOVE

1. flags
2. sky
3. eyeglasses
4. hats

WHAT

1. artists (visual artists) (1)
2. black-and-white film (1)
3. brick (clay product) (1)
4. campuses (1)
5. colleges (buildings) (1)
6. commencements (1)
7. exterior views (1)
8. men (male humans) (1)
9. photographers (1)
10. podiums (platforms) (1)
11. portraits (1)
12. railroad stations (1)
13. robes (main garments) (1)
14. stages (performances spac … (1)
15. train sheds (1)
16. Visual Works (hierarchy n … (1)
17. windows (1)
18. women (1)

WHEN

1. 1967 (1)