REMOVE

1. sky
2. roads
3. Yaddo
4. barriers

WHAT

1. Visual Works (hierarchy n … (2)
2. black-and-white film (2)
3. bushes (2)
4. columns (architectural el … (2)
5. exterior views (2)

More 

WHERE

1. New Windsor, Maryland (2)

WHEN

1. 1966 (1)
2. 1971 (1)