Barton Reading
https://bartonreading.com/

Bright Solutions for Dyslexia 
https://www.dys-add.com/

Equipping Minds
https://equippingminds.com

Institute for Excellence in Writing
https://iew.com/

International Dyslexia Association
https://dyslexiaida.org/

Learning Ally
https://learningally.org/

Overcoming Dyslexia by Sally Shaywitz, M.D.

Essentials of Dyslexia Assessment and Intervention by Nancy Mather and Barbara J. Wendling