They Called Me Mad: Genius, Madness, and the Scientists Who Pushed the Outer Limits of Knowledge by John Monahan
The Power Trail: History of Hydroelectricity at Niagara by Brett Gawronski, Jana Kasikova, Lynda Schneekloth, Thomas Yots
Nikola Tesla: Lecture Before the New York Academy of Sciences April 6, 1897: The Streams of Lenard and Roentgen and Novel Apparatus for Their Production by Nikola Tesla
Dr. Nikola Tesla: English / Serbo-Croatian Diary Comparisons and Tesla / Scherff Colorado Springs Correspondence by John T. Ratzlaff and Fred A. Jost