REMOVE

1. silver gelatin
2. boys
3. trees
4. hills

WHAT

1. automobiles (1)
2. exterior views (1)
3. farmers (1)
4. fields (land) (1)
5. group portraits (1)
6. landscapes (representatio … (1)
7. men (male humans) (1)
8. platforms (general) (1)
9. sky (1)
10. Visual Works (hierarchy n … (1)

WHERE

1. Alberta, Canada (1)

WHO

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

WHEN

1. 1920 (1)
2. 1945 (1)
3. between circa 1929 and ci … (1)