Hi rose,
The better options and possibilities I’m aware of in the general Huntsville area (including a search around the Florence area as well) are listed in post #2 here.
If you are committed to 100% natural latex then you may need to call them to find out which ones (if any) carry a mattress that matches your criteria.
If none of them make latex mattresses (or latex/innerspring hybrids) that use 100% natural latex then the tutorial post also includes a link to a list of online manufacturers and retailers that make a wide range of latex mattresses including many that have options for 100% natural Dunlop or Talalay.
There is more about the different types and blends of latex in post #6 here. I personally wouldn’t have any concerns or safety issues with any type of latex you are likely to encounter (whether it’s Dunlop or Talalay or uses natural rubber, synthetic rubber, or a blend of both) since all of them have been tested to the same standards by either Oeko-Tex or Eco-Institut for harmful chemicals and VOC’s.
It’s certainly possible to find mattress that match your criteria but they may not be available locally in every area of the country.
Phoenix