Autism Research Institute     
Provides information based on research to parents and professionals throughout the world.

Cure Autism Now Foundation (CAN)    
An organization of parents, physicians, and researchers, dedicated to promoting and funding research with direct clinical implications for treatment.

National Institute of Mental Health    
Brief overview of current research.  

M.I.N.D Institute    
The University of California, Davis, Health System.  This is a multidisciplinary research organization that studies several disorders dealing with neurodevelopment. Also, find a doctor or clinic in Sacramento area.