At its primary, A Class in Wonders is a channeled work, and its roots are shrouded in mystery. Helen Schucman, a medical psychologist, and Bill Thetford, an investigation psychiatrist, worked in the 1960s to transcribe the inner dictations that Schucman stated to get from an internal style she recognized as Jesus Christ. The method of receiving and recording these messages spanned eight years and triggered the three-volume guide called A Class in Miracles.