REMOVE

1. sky
2. artists (visual artists)
3. men (male humans)
4. portraits
5. branches (plant components)
6. Campbell, Sandra L. Still
7. 1964

WHAT

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

More 

WHERE

1. Westminster, Maryland (1)

WHO

1. Sandra L. Still Campbell; … (1)