American Kennel Club Newfoundland Breed Standard:
http://www.akc.org/breeds/newfoundland/index.cfm
Newfoundland Club of America:
http://www.ncanewfs.org/
Newfoundland Club of New England:
http://www.newfclubne.org/NCNE/
Orthopedic Foundation for Animals (OFA Certification):
http://www.offa.org/