REMOVE

1. plants
2. windows
3. automobiles
4. rugs (textiles)
5. daughters
6. stools (seating furniture)

WHAT

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

More 

WHERE

1. Westminster, Maryland (1)

WHO

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

Less

WHEN

1. 1966 (1)
2. ca. 1966 (1)