The Turn Of The Century Electrotherapy Museum http://www.electrotherapymuseum.com Spark Illustrations - Kinraide, Strong, Deek, Van Houten & Ten Broeck, Wagner... Lichtenberg Figures / Electric Autographs / Electrographs used for salesmanship. Filiciform discharge from Kinraide Coil Plumous Discharge of Kinraide's Jackson Coil Roman V. Wagner Mica Plate Static Machine Discharge Autograph made with Strong-Ovington Apparatus W. A. Deeks and E. G. Wilkinson at Van Houten and Ten Broeck