Some retro bits and pieces: 1. Ernie Shult, famous for his contributions to the theory of finite groups, studied and worked for a while at SIUC (see p.4)..
Centers where our faculty have collaborative ties: Philip Feinsilver at Nancy, France.
One of our colleagues, Lane Clark, has Erdös Number 1. Most of our faculty have Erdös Number 2 or 3, while the worldwide mean Erdös Number among mathematicians is about 5. (More on this piece of mathematical folklore).