William Walker Atkinson (2016). “THE POWER OF MIND - 17 Books Collection: The Key To Mental Power Development And Efficiency, Thought-Force in Business and Everyday Life, The Power of Concentration, The Inner Consciousness…: Suggestion and Auto-Suggestion + Memory: How to Develop, Train, and Use It, Practical Mental Influence + The Subconscious and the Superconscious Planes of Mind + Self-Healing by Thought Force…”, p.861, e-artnow