Curly, if you don't want to wait till Sept., Head to Cody WY this weekend.
Jake Clark is putting on the Cody Wild West Day catalog horse sale this weekend in Cody. It will be in front of the famous Irma Hotel right on the main drag going through town. Preview is Sat. May 9 at 8 AM, sale at 1 PM. Here is a link to the weekend schedule and catalog.
http://www.codywildwestdays.com/
Also, I was at the Weaver sale last Sept. and was truly impressed with the horses and the people behind them.
If your looking for horses with a little more "ear" then head to Cody WY on Fathers Day weekend in June for Jake's Clark's Mule Days.