REMOVE

1. rock
2. soil
3. barriers

WHAT

1. barns (1)
2. black-and-white film (1)
3. exterior views (1)
4. farmers (1)
5. farms (1)
6. farmyards (1)
7. fathers (1)
8. fences (1)
9. hats (1)
10. hay (material) (1)
11. machinery (1)
12. men (male humans) (1)
13. portraits (1)
14. rubbish (1)
15. sheds (storage structures … (1)
16. tools (1)
17. trees (1)
18. Visual Works (hierarchy n … (1)
19. wells (structures) (1)
20. wood products (1)

Less

WHERE

1. Alberta, Canada (1)

WHO

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

WHEN

1. 1940 (1)
2. 1940 September 8 (1)