The only picture that I have seen is on the back cover of Griswold's Sire catalog. If you can get to a sire directory of Griwold's online, that may be your best bet.
You may have to go through Collin's cattle company site to get there. The bull has caught my attention also. I'm not a big Sooner fan though. I think that the Dam is a Sharpie, ( Meyer 734 X Witch Doctor ) IMO, that helps.