REMOVE

1. trees
2. hills
3. roads
4. barriers

WHAT

1. banks (landforms) (1)
2. black-and-white film (1)
3. bridges (built works) (1)
4. buildings (structures) (1)
5. construction equipment (1)
6. construction sites (1)
7. fences (1)
8. landscapes (representatio … (1)
9. railroads (1)
10. rivers (1)
11. rock (1)
12. scaffolds (1)
13. sky (1)
14. utility poles (1)
15. Visual Works (hierarchy n … (1)

WHERE

1. Spokane, Washington (1)

WHO

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

WHEN

1. 1925 (1)
2. ca. 1925 (1)