At their key, A Course in Wonders is a channeled function, and its roots are shrouded in mystery. Helen Schucman, a scientific psychologist, and William Thetford, a study psychiatrist, worked in the 1960s to transcribe the internal dictations that Schucman stated for from an internal voice she recognized as Jesus Christ. The procedure of receiving and saving these messages spanned seven decades and triggered the three-volume book referred to as A Course in Miracles.