REMOVE

1. parks (recreation areas)
2. artists (visual artists)
3. groves (plant communities)

WHAT

1. Visual Works (hierarchy n … (1)
2. buildings (structures) (1)
3. coats (garments) (1)
4. color film (film) (1)

More 

WHERE

1. Washington, District of C … (1)

WHO

1. Garske, Patricia; Patrici … (1)
2. Still, Patricia (1)

WHEN

1. 1968 (1)