Tesla never failed to accompany his work with a number of books and articles for magazines and journals. Many Tesla writings are available freely online, but the list of his testimonials is huge. Probably the most interesting are: My Inventions: The Autobiography of Nikola Tesla; The Fantastic Inventions of Nikola Tesla, and The Problem of Increasing Human Energy. Also, there are numerous works written about Tesla’s work by other authors. Aside from work, Tesla wrote poetry from his childhood, but he found it too personal to be published.