
If you are looking to buy something for breeding you probably don't have much hope as they are few and far between from repuatable breeders. Most won't sell to someone for breeding only.
If and to give the benefit of the doubt is it is for a pet only I would advice contacting the breed clubs and see if the have a puppy co-ordinator.
What was the reason for having this litter you are due of you don't me asking if you plan to sell them all...?