The American Speech-Language-Hearing Association (ASHA)

http://www.asha.org/default.htm

The Stuttering Foundation of America

http://www.stutteringhelp.org/

The Autism Research Institute

http://www.autismwebsite.com/ari/index.htm

The Autism Society of America

http://www.autism-society.org/site/PageServer

The Dysphagia Resource Center

http://www.dysphagia.com/

The National Aphasia Association

http://www.aphasia.org/

The Cherab Foundation (apraxia-related)

http://www.cherab.org/index.html

American Stroke Association

http://www.strokeassociation.org/

The National Institute of Neurological Disorders and Stroke

http://www.ninds.nih.gov/