REMOVE

1. rocks (inorganic material)
2. fields (land)
3. wheat
4. landscapes (representations)

WHAT

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

WHERE

1. Pullman, Washington (1)

WHO

1. Still, Clyfford (1)

WHEN

1. 1937 (1)
2. Regionalist (American Sce … (1)