REMOVE

1. soil
2. sunlight
3. hills
4. exterior views

WHAT

1. banks (landforms) (1)
2. black-and-white film (1)
3. buildings (structures) (1)
4. construction equipment (1)
5. construction sites (1)
6. cranes (equipment) (1)
7. Grand Coulee Dam (dam) (1)
8. machinery (1)
9. mountains (1)
10. railroads (1)
11. rails (transit system ele … (1)
12. roads (1)
13. rock (1)
14. scaffolds (1)
15. shadows (1)
16. sheds (storage structures … (1)
17. sky (1)
18. towers (single built work … (1)
19. Visual Works (hierarchy n … (1)
20. 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)