REMOVE

1. rooftops
2. sky
3. roads
4. bushes
5. houses
6. towers (building divisions)

WHAT

1. Visual Works (hierarchy n … (1)
2. atmospheric perspective (1)
3. barns (1)
4. black-and-white film (1)
5. buildings (structures) (1)

More 

WHERE

1. New Windsor, Maryland (1)

WHEN

1. 1967 (1)
2. ca. 1967 (1)