REMOVE

1. barriers
2. sky
3. rock
4. rivers

WHAT

1. banks (landforms) (1)
2. black-and-white film (1)
3. buildings (structures) (1)
4. bushes (1)
5. construction sites (1)
6. exterior views (1)
7. hills (1)
8. landscapes (representatio … (1)
9. paths (1)
10. plants (1)
11. rubbish (1)
12. sheds (storage structures … (1)
13. trees (1)
14. Visual Works (hierarchy n … (1)
15. 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)