National Organizations

American Kennel Club
Canadian Kennel Club
The Labrador Retriever Club
NAHRA (North American Hunting Retriever Association)
HRC (Hunting Retriever Club)
Ducks Unlimited

Health

OFA (Orthopedic Foundation for Animals)
CERF (Canine Eye Registry Foundation)
Optigen Genetic Testing  
Vet Gen (Genetic testing including color)
Centronuclear Myopathy (CNM - also called Labrador Muscular Myopathy or Type II myopathy)

Publications

Animal Wellness Magazine
Working Retriever Central
Retriever Field Trial News
Retriever Journal
Retriever Guide
Bird Dog & Retriever News
Retrievers Online
Total Retriever (Mike Lardy)

Hunting Grounds

Indian Meadows Hunting & Fishing Club
Kiowa Creek Sporting Club
Wolf Creek Sporting Clays

Clubs

Master National Retriever Club
Pikes Peak Retriever Club
Colorado Foothills Retriever Club
Labrador Retriever Club of Greater Denver

Supplies

Lion Country Supply
J and J Dog Supplies
Dogwise
Bubba's Bird Dog Gear
Gun Dog Supply
Cabela's
Dogs Afield
Doctors Foster & Smith

Misc

Labrador Rescue Links 
Working Dog Web 
Shipping A Pet By Air 
K-9 Sports
The Dog Whisperer
Puppy Sites