Hi Welcome to YT this is such a great site. There is ton of info here.
I know that Tigers mom got her babies from a breeder on the East side of the mountains. I also know there are a few breeders on your side and Joeysmom also got her baby from the west side of the state.
Kim at yorkiepassion is in Portland you can check out her website. Kim is also a member of YT and is super nice.
Good luck. I happen to be in the center of WA and right now I am freezing!
