REMOVE

1. sidewalks
2. tipis
3. exhibitions (events)
4. doors

WHAT

1. Visual Works (hierarchy n … (1)
2. balconies (1)
3. black-and-white film (1)
4. branches (plant component … (1)
5. bushes (1)

More 

WHERE

1. New Windsor, Maryland (1)

WHO

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

WHEN

1. 1972 (1)