Samuel Torrey Orton (1879-1948), a neuropsychiatrist and pathologist, was a pioneer in focusing attention on reading failure and related language processing difficulties. He brought together neuroscientific information and principles of remediation. As early as the 1920s, he had extensively studied children with the kind of language processing difficulties now commonly associated with dyslexia and had formulated a set of teaching principles and practices for such children.

Anna Gillingham (1878-1963) was a gifted educator and psychologist with a superb mastery of the language. Working with Dr. Orton, she trained teachers and compiled and published instructional materials. Over the last half century the Orton-Gillingham approach has been the seminal and most influential intervention designed expressly for remediating the language processing problems of children and adults with dyslexia.
     Retrieved March 23, 2008 from http://www.ortonacademy.org/