Hi lwoods,
Welcome to the Mattress Forum! 
Subject to confirming that any retailer or manufacturer on the list is completely transparent (see this article ) and to making sure that any mattress you are considering meets your specific criteria and the quality/value guidelines here ā¦ the better options or possibilities Iām aware of in and around the Atlanta, GA area are listed in post #2 here .
On this list, the stores I found (and you may wish to search on your own as well) that say they offer latex mattresses are:
Tucker Mattress Co.
McDaniel Mattress Co.
OMF
Verlo
Ikea
Atlanta Mattress
Natural Sleep
Green Pear Organic Mattress
Natural Mattress Matters
Mattress USA
Mattress Plus
Sit ān Sleep
Phoenix