Don't know of one but best advice is to approach the breed club and get the name of one through them. Please don't be tempted to go to a puppy farm, (if they advertise lots of different breeds then they are best avoided).
Always see the puppy with it's mum and the rest of the litter and preferably the sire as well. A good breeder will 'interview' you, to ensure that the pup is going to a good home. If you are drawn to see some pups and then find that they have lied to you as sometimes happens, don't take one. These people rely on you falling for the pup once you have seen it.
Good luck and I hope you get a strong, healthy puppy.