Nikola Tesla - My Inventions - Autobiography

Nikola Tesla - The Strange Life of Nikola Tesla

The Energy Evolution - Viktor Schauberger

Nikola Tesla - The Magnifying Transmitter

Papp józsef feltaláló method and means for generating explosive forces - 3680431

Papp József fizikus - Method and Means of Converting Atomic Energy into Utilizable Kinetic Energy 3670494

Joseph Papp - Inert Gas Fuel, Fuel Preparation 4428193

Nikola Tesla - All U.S. Patents of Nikola Tesla 499 pages