Incorporated in 1980, the Alzheimer s Association is one of the leading voluntary health care organizations in Alzheimer care, support and research. The organization is a nonprofit, donor-supported organization that offers a broad range of programs and services, including a 24-hour helpline. It operates the Alzheimer's Association Green-Field Library, which provides a variety of information services to public. The organization partners with MedicAlert to provide Alzheimer's Safe Return, which is live 24-hour emergency response service for wandering and medical emergencies. It includes the Alzheimer's Association CareSource, which is an online group of resources. The Alzheimer s Association is headquartered in Chicago.