REMOVE

1. windows
2. automobiles
3. plants
4. boys
5. black-and-white film
6. neckties
7. trees
8. backdrops

WHAT

1. Visual Works (hierarchy n … (1)
2. artists (visual artists) (1)
3. barriers (1)
4. bushes (1)

More 

WHERE

1. Ensenada, Baja California … (1)

WHEN

1. 1949 (1)