REMOVE

1. figures (representations)
2. Visual works (hierarchy name …
3. 1939–1940

WHAT

1. blue (color) (1)
2. gears (1)
3. lines (geometric concept) (1)

WHERE

1. Pullman, Washington (1)

WHO

1. Still, Clyfford (1)

WHEN

1. 1939 (1)
2. 1940 (1)