The Inventions, Researches, and Writings of Nikola Tesla, by Thomas Commerford Martin. Origionally published in 1894, it's been reprinted by Lindsay Publications in soft cover. It's 496 pages long. Lots of drawings and details about many projects and ideas including polyphase currents,high frequency and high potential currents,miscellaneous inventions and writings and more. The material is over 100 years old, and some of the projects and ideas may be completely UNSAFE. So be careful, and have fun!