Autism Speaks, a group that funds biomedical research into autism causes and treatments, offers advice on early detection and treatment, and sponsors awareness walks.

First Signs included information on healthy development, diagnosis, treatment, and even insurance coverage.

The National Dissemination Center for Children with Disabilities website can connect you with agencies that offer early intervention in your area.

The Centers for Disease Control and Prevention's Learn the Signs, Act Early website provides a comprehensive chart of developmental milestones and an ASD fact sheet.