REMOVE

1. trees
2. bushes
3. farms
4. brown
5. Yaddo
6. horizon line

WHAT

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

More 

WHERE

1. Westminster, Maryland (1)

WHEN

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