REMOVE

1. stairs
2. sunlight
3. black-and-white film
4. sky
5. trees
6. towers (building divisions)

WHAT

1. Visual Works (hierarchy n … (1)
2. Yaddo (1)
3. bushes (1)
4. exterior views (1)

More 

WHERE

1. Yaddo, Saratoga Springs, … (1)

WHO

1. Clyfford Still; Still, Cl … (1)
2. Still, Clyfford (1)

WHEN

1. 1934 (1)