Our other classic. Many thousands sold. Here are the suppressed inventions of Nikola Tesla all in one place in clear English and in 42 illustrations. Tesla was famous at the turn of the century for inventing the alternating current system still in use today. But his later inventions, documented in some 30 U.S. patents between 1890 and 1921, have never been utilized as Tesla intended despite their obvious potential for advancing in fundamental ways the technology of modern civilization. Disk-turbine rotary engine, spark-gap oscillator, high-frequency electric transportation, the Tesla coil energy magnifier, high-frequency lighting, the magnifying transmitter, a radical high-power radio, wireless electric power, and the free- energy receiver. 42 illustrations.