This is Reiki: Transformation of Body, Mind and Soul from the Origins to the Practice by Frank Arjava Petter

"I would like to share with you my experience and insights from eighteen years of working with Reiki. In this time, my understanding of what Reiki is and how it works has changed considerably. During practice and the exchange with my fellow travelers and students it came to fruition and ripened." - Frank Arjava Petter