The Alzheimer's Association
Formed in 1980, the Alzheimer's Association is a voluntary health organization focused on Alzheimer's care, support and research.
https://www.alz.org/

National Institute on Aging
This federal government portal has a wealth of information on Alzheimer’s disease and related dementias care, research and support.
https://www.nia.nih.gov/health/what-alzheimers-disease

Mayo Clinic
The Mayo Clinic is a nonprofit academic medical center focused on integrated clinical practice, education, and research.
https://www.mayoclinic.org/diseases-conditions/alzheimers-disease/symptoms-causes/syc-20350447