REMOVE

1. sky
2. farms
3. rubbish
4. buildings (structures)
5. trees
6. 1961

WHAT

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

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WHERE

1. Westminster, Maryland (1)

WHEN

1. after 1961 (1)