REMOVE

1. roads
2. exterior views
3. streets
4. 1945

WHAT

1. forests (plant communitie … (1)
2. landscapes (representatio … (1)
3. silver gelatin (1)

WHERE

1. Alberta, Canada (1)
2. Pacific Northwest (1)

WHO

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

WHEN

1. 1920 (1)
2. between circa 1929 and ci … (1)