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The Master Key System


A MUST OWN! The Master Key System is a personal development book by Charles F. Haanel that was originally published as a correspondence course in 1912. Though originally a 24 week correspondence course, it was published in book form in 1916. It was first published as a book in 1916 by Psychology Publishing, St. Louis and The Master Key Institute, New York.

Out of stock


  • Series: Creating True Wealth
  • Paperback: 286 pages
  • Publisher: CreateSpace Independent Publishing Platform; 1 edition (April 7, 2016)
  • Language: English
  • ISBN-13: 9781585426270
  • Product Dimensions: 7 x 0.4 x 10 inches