[yorkiemini]

Wylies's Mom has great resources.
You might check the breeders section on YTCA.
Some thoughts:
-I only by from breeders who are actively showing - these probably will not be the cheap dogs, they usually breed to get their next champion.
- I also ask how many litters they have a year; of. Ours they can lie, but it gives you idea if they are BYB.
- always like to see the mother and father, but again they can lie about that.

Good luck in your search. Probably recommendations from people you know are the best. Also go to shows and talk with the people who are showing (when they aren't in the midst of getting ready to go into the ring however)