Hi Lizinia,
Pure Latex Bliss make talalay latex mattresses and have a retail outlet finder on their site with the outlets that carry them in your area.
Jamison Bedding also makes Talalay latex mattresses and also have a retail outlet finder on their site.
Hopefully both of these are up to date.
Post #10 here also lists the one factory direct manufacturer in Fayetteville, LA who makes all types of mattresses including latex and several more in Baton Rouge.
That should give you lots of latex options in the general area and some knowledgeable people as well to give you some in person guidance 
Phoenix