REMOVE

1. benches (furniture)
2. black-and-white film
3. barriers

WHAT

1. Visual Works (hierarchy n … (2)
2. artists (visual artists) (1)

More 

WHERE

1. New York, New York (1)
2. Westminster, Maryland (1)

WHO

1. Diane Still Knox; Diane K … (1)
2. Knox, Diane Still (1)

WHEN

1. 1958 (1)
2. 1961 (1)
3. after 1961 (1)