Book Description 1956. Contains lectures, patents and articles by the scientist and inventor who developed the AC current system and contributed greatly to science and humanity. This volume is a collection of documents chosen not only as precious evidence of Tesla's important scientific work, but they also provide a worthy signpost for the present and future generations of inventors of all fields of science and technics. Includes hundreds of diagrams and illustrations. This scarce work has four pages that have portions that are illegible.