At their key, A Course in Wonders is a channeled work, and their beginnings are shrouded in mystery. Helen Schucman, a medical psychologist, and Bill Thetford, a research psychiatrist, collaborated in the 1960s to transcribe the inner dictations that Schucman said for from an internal voice she determined as Jesus Christ. The process of receiving and saving these communications spanned eight years and resulted in the three-volume guide known as A Program in Miracles.