REMOVE

1. children
2. buildings (structures)
3. automobiles
4. hats
5. backdrops
6. artists (visual artists)

WHAT

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

More 

WHERE

1. New Windsor, Maryland (1)

WHEN

1. 1968 (1)