REMOVE

1. railroads
2. green
3. blue
4. clouds

WHAT

1. arbors (1)
2. artists (visual artists) (1)
3. atmospheric perspective (1)
4. automobiles (1)
5. barns (1)
6. berets (1)
7. black-and-white film (1)
8. concrete block (1)
9. eyeglasses (1)
10. farms (1)
11. fields (land) (1)
12. forests (plant communitie … (1)
13. geometric patterns (1)
14. gloves (1)
15. men (male humans) (1)
16. neckties (1)
17. plants (1)
18. portraits (1)
19. rifles (long guns) (1)
20. sky (1)
21. studios (work spaces) (1)
22. suits (main garments) (1)
23. tie clasps (1)
24. trees (1)
25. Visual Works (hierarchy n … (1)
26. wood products (1)
27. yards (areas) (1)

Less

WHERE

1. Westminster, Maryland (1)

WHO

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

WHEN

1. 1961 (1)
2. 1965 (1)
3. between 1961 - 1965 (1)