The Arabian Horse Association, founded in 1908, is an association of Arabian horse enthusiasts and a focal point for recreational and competitive activities. It is the official breed association and registry in the United States with more than 40,000 members who own Arabian, Half-Arabian and Anglo-Arabian horses. As a full-service breed association, it seeks to meet the breeding, competitive and recreational interests of all Arabian horse owners. As the official breed registry for the Arabian horse industry, the AHA Registry ensures the integrity and perpetuation of the breed. AHA offers more than 400 events and competitions and the largest online marketplace and community forum on the web. Membership in the AHA provides access to registration, programs, competitions and other services. The Arabian Horse Association is located in Aurora, Colo.