REMOVE

1. ships
2. machinery
3. shipbuilding
4. landscapes (representations)
5. 1942
6. Abstract

WHAT

1. Visual works (hierarchy n … (1)
2. cranes (equipment) (1)
3. oil paint (paint) (1)

More 

WHERE

1. San Francisco, California (1)

WHO

1. Still, Clyfford (1)

WHEN

1. Regionalist (American Sce … (1)