REMOVE

1. machinery
2. black-and-white film
3. construction equipment
4. fences
5. soil

WHAT

1. banks (landforms) (1)
2. barriers (1)
3. bridges (built works) (1)
4. buildings (structures) (1)
5. construction sites (1)
6. cranes (equipment) (1)
7. Grand Coulee Dam (dam) (1)
8. hills (1)
9. landscapes (representatio … (1)
10. mountains (1)
11. paths (1)
12. rivers (1)
13. roads (1)
14. rock (1)
15. rubbish (1)
16. scaffolds (1)
17. sheds (storage structures … (1)
18. sky (1)
19. valleys (landforms) (1)
20. Visual Works (hierarchy n … (1)
21. 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)