REMOVE

1. roads
2. streets
3. landscapes (representations)
4. 1920

WHAT

1. exterior views (1)
2. forests (plant communitie … (1)
3. silver gelatin (1)
4. trees (1)
5. utility poles (1)

WHERE

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

WHO

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

WHEN

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