REMOVE

1. farming
2. 1937

WHAT

1. buildings (structures) (2)
2. factories (structures) (2)
3. farms (2)
4. graphite pencils (2)
5. Visual works (hierarchy n … (2)
6. wax crayons (2)

WHO

1. Still, Clyfford (2)

WHEN

1. 1933 (2)
2. circa 1936 (2)