Aphasia From NIDCD -- the National Institute on Deafness and Other Communication Disorders (U.S.)
Aphasia From the American Speech-Language-Hearing Association
Apraxia of Speech "Apraxia of speech, also known as verbal apraxia or dyspraxia, is a speech disorder in which a person has trouble saying what he or she wants to say correctly and consistently." From NIDCD
Dyslexia: The Gift "The Davis Dyslexia Correction Program provides people with dyslexia with the tools to overcome learning problems." Lots of free information as well as books and seminars.
Dyslexia Archive Links to interesting articles and sites relevant to dyslexia