REMOVE

1. plants
2. railroads
3. sky
4. soil
5. fences
6. buildings (structures)

WHAT

1. black-and-white film (1)
2. exterior views (1)
3. grain elevators (1)
4. horizon line (1)
5. houses (1)
6. landscapes (representatio … (1)
7. rails (transit system ele … (1)
8. rock (1)
9. townscapes (representatio … (1)
10. trains (vehicle groupings … (1)
11. utility poles (1)
12. 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)