Whiplash101 - a site authored by Dr. Chris Centeno which has a wealth of information regarding whiplash injuries. 

The Spinal Injury Foundation - A non-profit organization dedicated to the research, education, and advocacy for those with chronic spinal injuries. 

The Institute for the Study and Treatment of Pain is dedicated to helping doctors and therapists treat chronic pain. The technique of intramuscular stimulation (dry needling) is taught at this Institute and described on their web site.