REMOVE

1. rooftops
2. sky
3. clouds
4. atmospheric perspective
5. hills
6. horizon line

WHAT

1. Visual Works (hierarchy n … (1)
2. black-and-white film (1)
3. churches (buildings) (1)

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WHERE

1. New Windsor, Maryland (1)

WHO

1. Campbell, Sandra L. Still (1)
2. Sandra L. Still Campbell; … (1)

WHEN

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