REMOVE

1. trains (vehicle groupings)
2. farming
3. automobiles
4. studies
5. 1923

WHAT

1. Visual Works (hierarchy n … (1)
2. landscapes (representatio … (1)
3. sketches (1)

WHO

1. Clyfford Still; Still, Cl … (1)
2. Still, Clyfford (1)

WHEN

1. 1936 (1)
2. circa 1929 (1)