There are a handful of GR breeders in MN, but I see they call out the cream color almost separately.
http://www.sunsetvalleyretrievers.com/
http://www.mygoldenopportunities.com/
I have a red lab, and had a few recommend the breeder we picked, which helps. Before the lab we were looking at English style Golden’s, there is a breeder down the road from us but I don’t see much of the cream colored.
There was a lady at the dog park who had a “white” Golden that was just friendly as all get out, however once the temp dropped I haven’t seen her come, should of asked where she got him from.
Are you looking to get on a puppy list or immediately adopt?