REMOVE

1. farms
2. red
3. white
4. green
5. orange
6. black

WHAT

1. Visual works (hierarchy n … (2)
2. brown (2)
3. grain elevators (2)
4. landscapes (representatio … (2)
5. railroads (2)

More 

WHERE

1. Killam, Alberta, Canada (1)
2. New Windsor, Maryland (1)

WHO

1. Still, Clyfford (2)

Less

WHEN

1. 1927 (1)
2. 1968 (1)