REMOVE

1. plants
2. roads
3. shadows
4. backdrops
5. automobiles
6. windows

WHAT

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

More 

WHERE

1. New Windsor, Maryland (2)

WHEN

1. 1966 (1)
2. 1967 (1)
3. after 1966 (1)