Here are some links to help with your search for a purebred dog.
Minnesota Purebredd Dogs
Minnesota Purebred Dog Breeders Association provides a breeders' directory for Minnesota.
Other sites of interest
The American Veterinary Medical Association with a wealth of information.
The ASPCA Animal Poison Control Center with information on how to poison proof your home, lists of toxic and non-toxic plants and instructions for dealing with poisoned animals.
The Merck Veterinary Manual , a comprehensive veterinary reference book available online free of charge.