REMOVE

1. soil
2. trees
3. plants
4. paths
5. buildings (structures)
6. 1937

WHAT

1. Nespelem (1)
2. Visual Works (hierarchy n … (1)
3. automobiles (1)
4. black-and-white film (1)

More 

WHERE

1. Nespelem, Washington (1)

WHO

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

WHEN

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