I got my Biewer "Little Man" from Sue who is extremely knowledgable about this breed and is a fabulous lady to boot. She is also a member here on YT.
Here is her website and I know she would be more than willing to help:
http://www.magnoliasmagnificentyorkies.com/
There are also other Biewer breeders that Sue knows about that would be closer to you but I do not have their websites.
Good Luck and I love the Biewers.