In 2003, there were about 1,118 regional, national, and international organizations within the state. Organizations with headquarters in New Hampshire include the Student Conservation Association (Charlestown), the American Association of Commodity Traders (Concord), the American Society of Environmental Education (Hanover), Interhostel (Durham), the Academy of Applied Science (Concord), and the Natural Organic Farmers Association (Antrim). There are a number of municipal and county historical societies.