Backyard ballistics : build potato cannons, paper match rockets, Cincinnati fire kites, tennis ball mortars, and more dynamite devicesWilliam GurstelleSold out4.1Track
Adventures from the Technology Underground: Catapults, Pulsejets, Rail Guns, Flamethrowers, Tesla Coils, Air Cannons, and the GaWilliam GurstelleSold out3.7Track
Remaking History: America's Great Inventors: Industrial RevolutionariesWilliam GurstelleSold outTrack
