REMOVE

1. houses
2. trees
3. automobiles
4. shadows
5. pillars
6. stairs
7. sky
8. sidewalks

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