Someone may be able to give you more direct information, but if not, you may want to contact the folks at
Telepiensos . They're a small outfit that sells pet food, but they are also involved a bit in breeding - or at least they were years ago when I lived there. The owners are the nicest people, very friendly and helpful, very caring about dogs, and I imagine they may be able to help you with some information. They were wonderful with us and our dogs. You might also want to ask at vet offices. They may know of a litter of puppies looking for a home.