REMOVE

1. rubbish
2. Grand Coulee Dam (dam)
3. paths
4. rock

WHAT

1. banks (landforms) (1)
2. barriers (1)
3. black-and-white film (1)
4. bridges (built works) (1)
5. buildings (structures) (1)
6. construction equipment (1)
7. construction sites (1)
8. cranes (equipment) (1)
9. fences (1)
10. hills (1)
11. landscapes (representatio … (1)
12. machinery (1)
13. mountains (1)
14. rivers (1)
15. roads (1)
16. scaffolds (1)
17. sheds (storage structures … (1)
18. sky (1)
19. soil (1)
20. valleys (landforms) (1)
21. Visual Works (hierarchy n … (1)
22. 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)