REMOVE

1. plants
2. workers
3. rubbish
4. sky
5. boys
6. bushes

WHAT

1. Visual Works (hierarchy n … (1)
2. Yaddo (1)
3. arbors (1)
4. black-and-white film (1)

More 

WHERE

1. Yaddo, Saratoga Springs, … (1)

WHO

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

WHEN

1. 1934 (1)