REMOVE

1. eyeglasses
2. artists (visual artists)
3. tile (materials)
4. pipes (smoking equipment)

WHAT

1. Visual Works (hierarchy n … (1)
2. barriers (1)
3. black-and-white film (1)
4. bushes (1)

More 

WHERE

1. Ensenada, Baja California … (1)

WHEN

1. 1949 (1)