Helen, if its still there, there's a little herp and fish shop called Fins and Skins (I think) in Knoxville. I've been to it before (while I was in college near Chattanooga).
Fresh and Salt Water Knoxville, TN - Fish Fins 'N Skins
Don't know if the guy still sells herps in the shop (this was 6-7 yrs ago), but he might point you in the direction of who does.
Also, contact Shane Whitaker of Quality Serpents (in Chattanooga). He could definitely point you in the right direction as well.
Quality Serpents - Contact Us/Ordering