REMOVE

1. soil
2. rock
3. plants
4. houses
5. horizon line

WHAT

1. black-and-white film (1)
2. buildings (structures) (1)
3. exterior views (1)
4. fences (1)
5. grain elevators (1)
6. landscapes (representatio … (1)
7. railroads (1)
8. rails (transit system ele … (1)
9. sky (1)
10. townscapes (representatio … (1)
11. trains (vehicle groupings … (1)
12. utility poles (1)
13. Visual Works (hierarchy n … (1)

WHERE

1. Killam, Alberta, Canada (1)

WHO

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

WHEN

1. 1920 (1)
2. 1940 (1)
3. between 1920 - 1940 (1)