I'm back in Chicago for a death in the family right now (which had the bonus of bringing me in for Thanksgiving.)
I stopped in at a few bookstores, and signed a dozen expanded editions of Columbine at Barnes & Noble Schaumburg, and 8 at Barbara's Books at O’Hare, terminals K and G.
Order info here.
They will be part of a big Black Friday autographed display at the B&N in Schaumburg (on Golf Rd), but you can ask or call for them any time.
These copies should last a bit, but I'll be back in Chicago for Christmas, flying through the Delta terminal at O'Hare (whatever that is), so I'll sign whatever they have again then.