North Dakota Quarter Horse Association The North Dakota Quarter Horse Association (NDQHA) is a non-profit corporation whose purpose is to promote and stimulate interest in the American Quarter Horse as registered by the American Quarter Horse Association (AQHA) of Amarillo, Texas. All proceedings of this Association will be in harmony with the policies and activities of the AQHA. Any person, family, firm, or corporation interested in the purpose and objectives of this Association may be a member by paying the annual dues to the secretary-treasurer. Family membership shall include husband & wife and any children who are 18 years of age and under as of January 1. Each family, firm, or corporation membership shall be entitled to two votes on matters of Association business. Single membership shall be entitled to one vote.