REMOVE

1. sky
2. fathers
3. fields (land)
4. machinery

WHAT

1. black-and-white film (1)
2. farms (1)
3. fences (1)
4. horizon line (1)
5. landscapes (representatio … (1)
6. plows (agricultural equip … (1)
7. rock (1)
8. shadows (1)
9. silhouettes (1)
10. Visual Works (hierarchy n … (1)

WHO

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

WHEN

1. 1920 (1)
2. 1940 (1)
3. between 1920 - 1940 (1)