REMOVE

1. sky
2. soil
3. mountains
4. hills
5. machinery
6. rivers
7. railroads
8. landscapes (representations)

WHAT

1. Visual Works (hierarchy n … (1)
2. bushes (1)
3. color film (film) (1)
4. cupolas (1)
5. exterior views (1)

More 

WHERE

1. New Windsor, Maryland (1)

WHEN

1. 1966 (1)
2. after 1966 (1)