I also agree about checking out the YTCA and Wingold, but I would also contact YorkieTalk member tjdmom. She is a small hobby breeder who health tests her breeding dogs and also shows them. My dear friend has one of her dogs, and Wyatt is a very loved little boy by both his mom and Teresa. She did a lot to socialize Wyatt and help him adjust to his new home, and I know she does the same for all her pups.
http://www.yorkietalk.com/forums/member.php?u=18764