In 2003, there were about 1,845 regional, national, and international organizations within the state. Among the organizations headquartered in Iowa are the National Farmers Organization (Corning), the American College Testing Program (Iowa City), the National Meals on Wheels Foundation (Iowa City), the National Collegiate Honors Council (Ames), and the Antique Airplane Association (Ottumwa). State educational and cultural organizations include the Iowa Arts Council, the Iowa Historic Preservation Alliance, and the State Historical Society of Iowa.