REMOVE

1. doors
2. boats
3. soil
4. combines

WHAT

1. Visual works (hierarchy n … (2)
2. farms (2)
3. landscapes (representatio … (2)
4. machinery (2)
5. oil pastels (2)

More 

WHERE

1. Bow Island, Alberta, Cana … (2)

WHO

1. Still, Clyfford (2)

WHEN

1. 1923 (2)