Here are some previous threads I've found about breeders/yorkies in TX. I guess you could just start calling breeders. Maybe one of them has an older yorkie that they will sell for a reduced price. Doesn't hurt to try. I know the first thread is a little sketcy, but there's some good info on there nonetheless.
http://www.yorkietalk.com/forums/sho...breeders+texas http://www.yorkietalk.com/forums/sho...=breeder+texas