Mr. Yoder's name is on the USDA "puppymill" list. Please do not buy a puppy from him:
http://www.prisonersofgreed.org/ListA2006.pdf
Pennsylvania is the Puppymill Capital of the East so you will have to be very careful. I would start with the breeders on the Yorkshire Terrier Club breeder referral list:
Yorkshire Terrier Club of America About The Club