REMOVE

1. sky
2. sitting
3. cardigans
4. backdrops
5. rivers
6. hats
7. artists (visual artists)

WHAT

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

More 

WHERE

1. Westminster, Maryland (1)

WHEN

1. 1961 (1)
2. after 1961 (1)