REMOVE

1. travel
2. railroads
3. purple
4. 1963

WHAT

1. automobiles (1)
2. buildings (structures) (1)
3. cityscapes (representatio … (1)
4. exterior views (1)
5. New York, New York (1)
6. silver gelatin (1)
7. tires (1)
8. trucks (1)
9. Visual Works (hierarchy n … (1)

Less

WHO

1. Clyfford Still; Still, Cl … (1)
2. Still, Clyfford (1)

WHEN

1. 1950 (1)
2. 1954 (1)
3. circa 1952 (1)