Check out Frank Purdy's line, OldSquaw Kennels,
Labrador Retriever Puppies For Sale Labrador Retriever For Sale Labrador Retriever Breeder
My present dog came out of this kennel. Very high end field dogs. Frank is a top notch breeder and field trial competitor, and takes his dogs deadly seriously. Not to mention, his kennel facility is world class! He also screens both the bitch and male for genetic defects inherit disorders.
I realize he's out in Dowling, Mich, but he has family in Ma (Weymouth) and he's up this way often, and will actually deliver a pup if possible. He also has started dogs available.