REMOVE

1. houses
2. plants
3. landscapes (representations)
4. trees
5. 1920

WHAT

1. Visual Works (hierarchy n … (1)
2. exterior views (1)

WHERE

1. Alberta, Canada (1)

WHO

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

WHEN

1. 1945 (1)
2. between circa 1929 and ci … (1)