There are several breeders or people with projects on this forum. I'm working my way into partridge rocks by arranging to take breeders' culls.
I would check out the plymouth rocks threads in the "breeds" section, and see if there is a silver-penciled thread. I see them regularly in someone's signature but can't at the moment think of who... I'll let you know if I figure it out.
Not sure where you're located but there is a breeder in NC whose handle is "birdbrain5". "DFCottage" has contacted me about partridge rocks and also has silver penciled. It is possible both these folks got their birds from Wynette, so I'd maybe think about going to her if you can wait til spring.