REMOVE

1. sky
2. portraits
3. fountains
4. plants
5. bushes
6. tile (materials)

WHAT

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

More 

WHERE

1. Ensenada, Baja California … (1)

WHEN

1. 1949 (1)