REMOVE

1. trees
2. rivers
3. automobiles
4. buildings (structures)
5. artists (visual artists)
6. sky

WHAT

1. Visual Works (hierarchy n … (1)
2. balconies (1)
3. black-and-white film (1)
4. brick (clay product) (1)
5. bushes (1)

More 

WHERE

1. New Windsor, Maryland (1)

WHEN

1. 1966 (1)
2. after 1966 (1)