REMOVE

1. mothers
2. yellow
3. trucks
4. after 1966

WHAT

1. black-and-white film (1)
2. farmers (1)
3. farming (1)
4. fathers (1)
5. fields (land) (1)
6. forests (plant communitie … (1)
7. labor (1)
8. landscapes (representatio … (1)
9. men (male humans) (1)
10. plants (1)
11. plows (agricultural equip … (1)
12. portraits (1)
13. soil (1)
14. tractors (agricultural eq … (1)
15. trees (1)
16. Visual Works (hierarchy n … (1)

Less

WHERE

1. Killam, Alberta, Canada (1)

WHO

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

WHEN

1. 1938 (1)
2. 1942 (1)
3. circa 1940 (1)