http://www.kingsnake.com/events.php
I also usually go to the Richmond show also. It's a small show but the vendors that are usually there are a bunch of outstanding local breeders such as Carl Gilmore and Colin Weaver just to name a couple.The next expo close to you is the richmond show on october 30th. I go to that show but its a small show.
And if you had to pick just one Richmond show to go to during the year I'd say the October show is the best, lots and lots of BP morphs, if you are into that kind of thing.