REMOVE

1. farming
2. machinery
3. farmers
4. black-and-white film
5. 1942
6. 1938

WHAT

1. Visual Works (hierarchy n … (1)
2. clouds (1)

More 

WHERE

1. Bow Island, Alberta, Cana … (1)

WHO

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

WHEN

1. circa 1940 (1)