Put in in the "American Classifieds" and the "Dallas" paper (can't remember what it's called). Both papers can be searched online, as well as the Houston Chronicle, Austin American Statesman, etc. That is how I search and often find every sort of breeding stock for my farm. The American classifieds, aka "The Thrifty Nickle" is very popular with many farmer/rancher types I know. If the bull is registered, the sale barn is the last resort unless there is something already known to be wrong with the bull. That is to say, just because an animal of any variety is registered, doesn't automatically make him/her a supreme being. On the flip side, you may have exactly what someone is looking for and the papers prove it is what you say it is.