REMOVE

1. fences
2. berets
3. sidewalks
4. windows
5. buildings (structures)
6. artists (visual artists)

WHAT

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

More 

WHERE

1. 48 Cooper Square, New Yor … (1)

WHO

1. Garske, Patricia; Patrici … (1)
2. Still, Patricia (1)

WHEN

1. 1952 (1)
2. ca. 1952 (1)