William Atkinson wrote under several pseudonyms like Yogi Ramacharaka, Thomas Sheldon, Magus Incognito, Swami Panchadasi and many others. Theron Q. Dumont was one such pen name that he used, to create the persona of a French writer who talks about the powers of the mind, memory enhancement, the will and using the power of personal magnetism to achieve one's ends. It was presumed that he adopted these pseudonyms to protect his legal career.

The Power of Concentration was first published in Chicago in 1918. As a pioneering self help book, it deals with developing the faculty of deep concentration to achieve your personal and professional goals. Bending the entire power of your mind and focusing it on the thing you want to achieve apparently creates cosmic energies that will manifest the goal. For many modern day readers, this may sound extremely familiar. Current theories of coaching, mentoring and the plethora of “How To...” books that crowd bookstore shelves all contain ideas like this. The power of visualization, self-dialog, self-awareness, elimination of negative thoughts etc. are all presented in The Power of Concentration.

The book also contains practical exercises for honing your powers of concentration, observation and keeping your focus sharp and keen. There are also excellent suggestions regarding diet and nutrition, exercise and physical fitness and their effect on the mind. However, the latter half of the book could be disappointing to some readers as it meanders through topics like cosmic rays, divine wisdom, etc which tend to delve into less than believable territory.

However, as a self help manual, The Power of Concentration does indeed provide valuable tips on cultivating the now lost art of concentration. For today's generation which is subject to an infinite number of distractions and is prey to notoriously short attention spans, The Power of Concentration is a most valuable and useful guide.