REMOVE

1. hats
2. automobiles
3. rock
4. lamps (lighting devices)
5. 1969
6. 1966

WHAT

1. Visual Works (hierarchy n … (1)
2. black-and-white film (1)
3. branches (plant component … (1)
4. bushes (1)

More 

WHERE

1. New Windsor, Maryland (1)

WHEN

1. after 1966 (1)