REMOVE

1. mansions
2. trees
3. sky

WHAT

1. artists (visual artists) (1)
2. black-and-white film (2)
3. blouses (main garments) (1)
4. buildings (structures) (1)
5. bushes (1)
6. columns (architectural el … (1)
7. daughters (1)
8. doors (1)
9. exterior views (2)
10. fountains (1)
11. gardens (open spaces) (2)
12. hats (1)
13. ladders (1)
14. men (male humans) (1)
15. plants (2)
16. portraits (1)
17. shadows (1)
18. skirts (garments) (1)
19. stairs (1)
20. sunlight (1)
21. towers (building division … (1)
22. Visual Works (hierarchy n … (2)
23. windows (2)
24. women (1)
25. Yaddo (1)

WHERE

1. Yaddo, Saratoga Springs, … (1)

WHO

1. Campbell, Sandra L. Still (1)
2. Clyfford Still; Still, Cl … (1)
3. Sandra L. Still Campbell; … (1)
4. Still, Clyfford (1)

More 

WHEN

1. 1934 (1)