Here's a link to the Selkirk Rex breed page at breedlist.com. They have a listing of breeders across the country, including one in Pennsylvania. I haven't done any geography for a while so I don't know if it's close enough, but the breeder said delivery within 5 hours of Pittsburgh.. Hope that helps!
There's not really any nearby breeders listed on meowhoo, but here's a link and maybe you can get some more info there.