I've never heard of one that is ONLY for snakes, but any herp expo will usually have LOTS of snakes. There's one in Havre de Grace that happens every month, or something close to that, if I remember right. And then a big show in Baltimore coming up, I believe.
---=ALLISON=--- "Not everyone is going to agree or listen to what you say but I have learned to do my best to educate and hope they listen in the long run. Just keep trying to educate. There will be people out there that actually do listen and learn. -Me"