William Gurstelle

Backyard Ballistics

Absinthe & Flamethrowers

The Art of the Catapult

The Art of the Catapult

Defending Your Castle

Adventures from the Technology Underground

Adventures from the Technology Underground: Catapults, Pulsejets, Rail Guns, Flamethrowers, Tesla Coils, Air Cannons, and the Garage Warriors Who Love Them (Unabridged)