Boundary-Layer Breakthrough: The Bladeless Tesla Turbine, Volume II, Tesla Technology Series by Jeffery A. Hayes
Tesla Coil Handbook: Introduction to Theory, Design, and Construction of Air-Core Resonating Transformers by Todd A. Pringle
The Power Trail: History of Hydroelectricity at Niagara by Brett Gawronski, Jana Kasikova, Lynda Schneekloth, Thomas Yots