REMOVE

1. trees
2. fences
3. barriers
4. sheds (storage structures)

WHAT

1. atmospheric perspective (1)
2. banks (landforms) (1)
3. black-and-white film (1)
4. bridges (built works) (1)
5. buildings (structures) (1)
6. clouds (1)
7. construction equipment (1)
8. construction sites (1)
9. cranes (equipment) (1)
10. Grand Coulee Dam (dam) (1)
11. hills (1)
12. houses (1)
13. landscapes (representatio … (1)
14. machinery (1)
15. mountains (1)
16. paths (1)
17. railroads (1)
18. rivers (1)
19. roads (1)
20. rock (1)
21. scaffolds (1)
22. sky (1)
23. towers (single built work … (1)
24. townscapes (representatio … (1)
25. utility poles (1)
26. valleys (landforms) (1)
27. Visual Works (hierarchy n … (1)
28. wood products (1)

WHERE

1. Grand Coulee, Washington (1)

WHO

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

WHEN

1. 1936 (1)
2. 1937 (1)
3. ca. 1936 - 1937 (1)