REMOVE

1. moustaches
2. spouses
3. black-and-white film
4. portraits
5. towers (building divisions)

WHAT

1. Visual Works (hierarchy n … (1)
2. chairs (furniture forms) (1)
3. curators (1)
4. doors (1)

More 

WHERE

1. Ensenada, Baja California … (1)

WHO

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

WHEN

1. 1949 (1)