Since I'm piddling with the garden now I ran into a friend that grows nothing but Heritage and Organic plants. I was looking for a new supplier and asked him where he got his initial seeds from.
Surprisingly enough, they're just a couple of county's away. Nice people and looks like they have good quality.
Their prices are very good!
http://www.southernexposure.com/
Another option. www.seedsavers.org
Second on the seedsavers