There are several that come to mind: Nelson's Kennel; Maple Hills Kennels; Thistle Rock Goldens; Top Brass (Chicago). You might try contacting The AKC for a more complete list.
My Golden is 10 years young so I'm sort of out of the loop (not looking), when it comes to breeders. Joel Nelson (activce on this site) may be able to assist you. Good luck and good hunting!