Wauk A Way Farm is the breeder..I actually am not sure on who owns Jay Hawk, they bred ASPC shetland ponies and a lot were small enough to hardship into the AMHR, they focused on pinto ponies and had some really neat "older" shetland bloodlines. I have two mares from them, they dispersed due to Doc Wempe's health...a good friend of mine here in Ohio (Ellen) has a LOT of their ponies and did a lot for the family to help them out.
I believe Jackie Tyler (Emerald Glenn Farm) owns the sire of Jay Hawk (and dam too?? Not sure on that one)..
Although they did disperse..here is the link to their website which is still up -
http://waukawayfarm.tripod.com/
Jay Hawk has always been one of my favorite ponies too!