- We are an IAHA Region IX Affiliate, Serving the Arabian Horse Enthusiasts of Central Texas for Over 35 Years! St. Jude Children's Hospital Ride for Research Raised over $1000!!! Thanks to all of the participants, organizers, and donors! Now Available On Our Site reasonably priced classified ads! Visit the Classifieds and the Information & Submissions pages! We're excited about all of our ...www.ctahc.com