William Walker Atkinson (December 5, 1862 – November 22, 1932) was an attorney, merchant, publisher, and author, as well as an occultist and an American pioneer of the New Thought movement. He is also thought to be the author of the pseudonymous works attributed to Theron Q. Dumont and Yogi Ramacharaka.

He is the author of an estimated 100 books, all written in the last 30 years of his life. He was also mentioned in past editions of Who’s Who in America, Religious Leaders of America, and several similar publications. His works have remained in print more or less continuously since 1900.

Source: Wikipedia