In 1971 John Quinn moved from Illinois to the University of Pennsylvania, where in 1978 he was designated the first recipient of its Robert D. Bent endowed professorship [REF].
Among other appointments, John Quinn has been visiting professor at Imperial College, London (1965-6 and 1986; visiting scientist at MIT (1980); Sherman Fairchild Scholar at Caltech (1985); and visiting professor at the University of Rome (1992).