REMOVE

1. rubbish
2. Visual Works (hierarchy name …
3. trees
4. clouds
5. bushes

WHAT

1. artists (visual artists) (1)
2. black-and-white film (1)
3. buildings (structures) (1)

More 

WHERE

1. Westminster, Maryland (1)

WHEN

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