REMOVE

1. paths
2. sitting
3. monuments
4. gloves
5. sky
6. barriers
7. tie clasps

WHAT

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

More 

WHERE

1. Westminster, Maryland (1)

WHO

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

WHEN

1. 1963 (1)
2. 1963 - 1964 (1)
3. 1964 (1)