REMOVE

1. black-and-white film
2. automobiles
3. eyeglasses
4. backdrops
5. trees
6. artists (visual artists)

WHAT

1. Visual Works (hierarchy n … (1)
2. barns (1)
3. buildings (structures) (1)
4. clouds (1)

More 

WHERE

1. Westminster, Maryland (1)

WHEN

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