REMOVE

1. Visual works (hierarchy name …
2. abstraction
3. machinery
4. Oakland, California
5. Still, Clyfford
6. Abstract

WHAT

1. Visual works (hierarchy n … (1)
2. figures (representations) (1)
3. heads (animal components) (1)

WHERE

1. Oakland, California (1)

WHO

1. Still, Clyfford (1)

WHEN

1. 1942 (1)