REMOVE

1. sitting
2. sky
3. boys
4. automobiles
5. hats
6. artists (visual artists)

WHAT

1. Visual Works (hierarchy n … (1)
2. black-and-white film (1)
3. bushes (1)
4. doors (1)

More 

WHERE

1. Greenwich, Connecticut (1)

WHEN

1. 1956 (1)
2. 1956 April 11 (1)