REMOVE

1. clouds
2. trees
3. farms
4. fields (land)
5. silhouettes
6. Westminster, Maryland

WHAT

1. Visual Works (hierarchy n … (1)
2. benches (furniture) (1)
3. black-and-white film (1)
4. branches (plant component … (1)
5. buildings (structures) (1)

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WHO

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

WHEN

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