REMOVE

1. sky
2. sidewalks
3. black-and-white film
4. buildings (structures)
5. branches (plant components)

WHAT

1. Visual Works (hierarchy n … (1)
2. artists (visual artists) (1)
3. berets (1)
4. birds (animals) (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)