REMOVE

1. collectors
2. Japan
3. exhibitions (events)
4. Belgium
5. Baltimore, Maryland

WHAT

1. Visual Works (hierarchy n … (1)
2. black-and-white film (1)
3. branches (plant component … (1)
4. brick (clay product) (1)
5. bushes (1)

More 

WHERE

1. New Windsor, Maryland (1)

WHEN

1. 1966 (1)
2. ca. 1966 (1)