Introductory

Claude Bristol, The Magic of Believing

Henry Drummond, The Greatest Thing in the World

Christian D. Larson
          The Great Within
          How to Be Well
          How to Heal Yourself
          How to Stay Young
          The Ideal Make Real
          Leave it to God
          Just Be Glad
          Mastery of Self
          The Mind Cure
          Thinking for Results
          Your Forces and How to Use Them

Dr Joseph Murphy, The Power of Your Subconscious Mind

William Walker Atkinson
          Mind Power
          Thought Vibration or Law of Attraction in the Thought World

Intermediate

James Allen, As A Man Thinketh

Napoleon Hill, Think and Grow Rich

Ernest Holmes
          Creative Mind
          The Science of Mind
          This Thing Called You

Catherine Ponder
          The Dynamic Laws of Healing
          The Dynamic Laws of Prosperity
          The Prospering Power of Love

Ralph Waldo Trine, In Tune with the Infinite

Wallace Wattles, The Science of Getting Rich Free eBook

Advanced

Joseph S. Benner
          The Impersonal Life
          The Way Out

Charles Haanel, The Master Key System Free eBook

Jiddu Krishnamurti, At the Feet of the Master

Dr Robert A. Russell, God Works Through You