I know that autism reasearch keeps increasing in their knowledge and services to family. I think to tell you one in your area, one would have to know where you live, but I think you could start by contacting Autism Research Institute in California, (619) 281-7165 They might be able to direct you to one that is in your area.
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There are many charities that deal with Autism worldwide. In Australia there is a large one named 'Autism Spectrum Australia' which I support. Check your local directories under Charities to see what is available in your area.