REMOVE

1. pipes (smoking equipment)
2. sky
3. bushes
4. beaches
5. black-and-white film

WHAT

1. Visual Works (hierarchy n … (1)
2. buildings (structures) (1)

More 

WHERE

1. Ensenada, Baja California … (1)

WHO

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

WHEN

1. 1949 (1)