REMOVE

1. chalk pastel
2. landscapes (representations)
3. trains (vehicle groupings)
4. studies

WHAT

1. Visual Works (hierarchy n … (1)
2. graphite pencils (1)

WHO

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

WHEN

1. 1923 (1)
2. 1933 (1)
3. circa 1928 (1)