REMOVE

1. soil
2. Nespelem
3. roads
4. trees
5. trucks
6. buildings (structures)
7. automobiles

WHAT

1. Visual Works (hierarchy n … (1)
2. black-and-white film (1)

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WHERE

1. Nespelem, Washington (1)

WHO

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

WHEN

1. 1937 (1)
2. 1938 (1)
3. ca. 1937 - 1938 (1)