Volume 4: Lessons 37-48. Extension Study Course in the Science of Mind. A complete commentary on the Science of Mind Textbook by Dr. Ernest Holmes
Volume 3: Lessons 25-36. Extension Study Course in the Science of Mind. A complete commentary on the Science of Mind Textbook by Dr. Ernest Holmes
Volume 2: Lessons 13-24. Extension Study Course in the Science of Mind. A complete commentary on the Science of Mind Textbook by Dr. Ernest Holmes
Volume 1: Lessons 1-12. Extension Study Course in the Science of Mind. A complete commentary on the Science of Mind Textbook by Dr. Ernest Holmes
Volume 1-4: Lessons 1-48. Extension Study Course in the Science of Mind. A complete commentary on the Science of Mind Textbook by Dr. Ernest Holmes