REMOVE

1. hills
2. utility poles
3. houses
4. farms
5. clouds
6. barns
7. black-and-white film

WHAT

1. Visual Works (hierarchy n … (1)
2. banks (landforms) (1)
3. buildings (structures) (1)

More 

WHERE

1. Maryland (1)

WHEN

1. 1961 (1)
2. after 1961 (1)