REMOVE

1. stairs
2. rock
3. automobiles
4. sidewalks
5. streets
6. houses
7. sky
8. black-and-white film

WHAT

1. Visual Works (hierarchy n … (1)
2. branches (plant component … (1)
3. bushes (1)

More 

WHERE

1. New Windsor, Maryland (1)

WHEN

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