REMOVE

1. landscapes (representations) …
2. sky
3. oil paint (paint)
4. Bow Island, Alberta, Canada …
5. Regionalist (American Scene) …

WHAT

1. Visual works (hierarchy n … (2)
2. landscapes (representatio … (2)
3. oil paint (paint) (2)
4. clouds (1)

More 

WHERE

1. Bow Island, Alberta, Cana … (2)

WHO

1. Still, Clyfford (2)

WHEN

1. 1923 (2)
2. Regionalist (American Sce … (2)