In the interests of getting the history right.
Cliff published his book in 1989 (reporting events, I think from 1987 but
I can't find my copy of the book).
BBN acquired BARNET and began operating parts of its network from Stanford
buildings no sooner than 1991 (I personally delivered the bid from BBN
Planet [now Genuity] to the BARNET offices and I didn't move to California
until September 1991).
Craig