REMOVE

1. fathers
2. hats
3. tools
4. 1971
5. 1966

WHAT

1. farming (2)
2. farms (2)
3. machinery (2)
4. Visual Works (hierarchy n … (1)
5. Visual works (hierarchy n … (1)

More 

WHERE

1. Pullman, Washington (1)

WHO

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

WHEN

1. 1936 (2)
2. 1923 (1)
3. circa 1925 (1)