REMOVE

1. railroads (infrastructure)
2. oil paint (paint)
3. figures (representations)
4. 1930-1931

WHAT

1. Visual works (hierarchy n … (1)
2. railroad stations (1)
3. railroad yards (1)

WHERE

1. Killam, Alberta, Canada (1)

WHO

1. Still, Clyfford (1)

WHEN

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