American Speech, Language and Hearing Association (ASHA) is the national association for Speech and Language Therapists and Audiologists. This association provides information to the public about services and other related information.
http://www.asha.org/public
Stuttering Information/Help
National Stuttering Association http://www.nsastutter.org/
The National Stuttering Center for Stuttering http://www.stuttering.com
Stuttering Foundation of America http://www.stutteringhelp.org