REMOVE

1. trains (vehicle groupings)
2. railroads (infrastructure)
3. 1930
4. 1931

WHAT

1. Visual works (hierarchy n … (1)
2. figures (representations) (1)
3. oil paint (paint) (1)
4. railroad stations (1)
5. railroad yards (1)

WHERE

1. Killam, Alberta, Canada (1)

WHO

1. Still, Clyfford (1)

WHEN

1. 1930-1931 (1)
2. Regionalist (American Sce … (1)