I found a few sites that have some info on and pics of most of the Dual Champions in Bret's pedigree. And, yes...I do realize that I have officially gone off the deep end in my pup obsession.
http://www.nmk1gsp.net/Duals/spencer.html
http://www.rugerheim.com/dualchampions.htm
http://www.waycoolkennels.com/rexxpic.asp -> This one is one of the few that was not from NMK or Rugerheim.