REMOVE

1. trees
2. bushes
3. stairs
4. plants
5. doorways
6. streets
7. black-and-white film

WHAT

1. Visual Works (hierarchy n … (1)
2. branches (plant component … (1)
3. brick (clay product) (1)

More 

WHERE

1. New Windsor, Maryland (1)

WHEN

1. 1966 (1)
2. ca. 1966 (1)