REMOVE

1. 1964
2. 1971
3. 1985
4. Abstract
5. 1938
6. 1952

WHAT

1. Visual Works (hierarchy n … (1)
2. black-and-white film (1)
3. clouds (1)
4. fields (land) (1)
5. hills (1)

WHO

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

WHEN

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