http://www.ialha.org
The official registry of pure and partbred Andalusian and Lusitanos
http://www.prehorse.org/_main/
http://www.warlander-horses.com/
P.R.E./Arab cross, the Hispano Arab:
http://www.prhaa.com/
The Hispano-Arab is not a new breed, actually, it is the combination of two of the world's oldest breeds, the Andalusian x Arabian.