REMOVE

1. workers
2. blue
3. red
4. machinery
5. farms
6. blood

WHAT

1. Visual Works (hierarchy n … (1)
2. buildings (structures) (1)
3. color film (film) (1)
4. doors (1)
5. driveways (1)

More 

WHERE

1. New Windsor, Maryland (1)

WHEN

1. 1971 (1)
2. ca. 1971 (1)