American Autism Society - Providing information, research, and reference on autism with nearly 200 chapters nationwide. It also includes a link listing conferences/events nationwide. Located in Bethesda, Maryland. http://www.autism-society.org/ 301-657-0881 or 1-800-328-8476

Association for Science in Autism (ASAT)- Supporting all scientifically sound research on the prevention, treatment and cure of autism, as well as all treatments for autism that are shown to be effective through solid scientific research, regardless of discipline or domain. http://www.asatonline.org/

Autism Biomedical Information Network – Providing science-based biomedical information on autism including a list of unproven biomedical treatments. Located in Highland Park, IL. http://www.autism-biomed.org/

Cambridge Center for Behavioral Studies – Providing scientifically validated information about the causes of autism, and the Applied Behavior Analysis (ABA) approach to treating it. http://www.behavior.org/autism/

National Institute of Mental Health- Part of the National Institutes of Health, and a component of the U.S. Department of Health and Human Services; providing the definition, diagnosis, and treatment for autism from a medical standpoint. http://www.nimh.nih.gov/publicat/autism.cfm