I am listing these visuals by book reference in case there is intrest in purchasing the book - they are all amazing books to read through and study:The Structure of Singing by Richard Miller - Anatomy 1Anatomy 2ArticulatorsDiaphragm, Lungs, and RibsIPA HelperTongue and Lip PositionsTorso RegionsThe Performer's Voice by Meribeth Bunch DaymePostureBreath PressureDiction by John MoriartyVowel Chart