REMOVE

1. trees
2. sky
3. backdrops
4. cardigans
5. children
6. plants
7. women
8. spouses
9. shadows

WHAT

1. Visual Works (hierarchy n … (1)
2. arcades (structural assem … (1)
3. artists (visual artists) (1)
4. barriers (1)
5. benches (furniture) (1)

More 

WHERE

1. New York, New York (1)

WHEN

1. 1964 (1)
2. ca. 1964 (1)