Breeding program with accurate records is questionable. I have a Kellogg dog that in the fourth or fifth generation either the color was listed wrong on the AKC papers or they did not have the right parentage. Mayo pen bred his dogs, and sometimes he housed a number of dogs together, both male and female. If a female ended up pregnant, he would try to figure out the parentage by the color of the pups.
They got really big, it became a burden to Mayo and he didn't have the help to keep up with housekeeping at one time. ASPCA came in a confiscated many of his dogs. He started back up but this time without a huge number of stud dogs and he farmed out many of the females to family and friends so that he could keep the numbers of dogs on his place down.
After Mayo passed away, his son Hugh took over. I do not think that Hugh had the "dog savvy" that Mayo did, he ran the kennel more like just a business. That business is pretty much done. You can still go to South Dakota and get a dog from them, but this generation of dog is nothing like the older lines.
One thing to note, they did not do hardly any OFA or other health clearances. Most of the ones that did have OFA were dogs that people bought, and then Kellogg used them for studs.
Take this post with grain of salt with the knowledge that it came from conversations with a good friend of Mayo's, who was also a good friend of my father. I have been trying to find some of the older bloodlines myself. I have never had a Kellogg dog that didn't make a great hunting dog and family pet. Luckily I have also had ones with longevity and health as well.
