Complete seven volume set. Dark green cloth embossed boards. Gilt on covers and spine considerably faded. Minor bumps and rubbing here and there. No serious faults. Binding and hinges sturdy on all. No markings to pages. Haanel is most well known for his Master Key System, which contributed to the New Thought movement. The major works of Napoleon Hill and Rhonda Byrne were allegedly influenced by Haanel. The New Psychology, as a complete set, is incredibly scarce.