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- Backyard ballistics, build potato cannons, paper match rockets, Cincinnati fire kites, tennis ball mortars, and more dynamite devices, William Gurstelle
- Defending your castle, build catapults, crossbows, moats, bulletproof shields, and more defensive devices to fend off the invading hordes, William Gurstelle
- The art of the catapult, build Greek ballistae, Roman onagers, English trebuchets, and more ancient artillery, William Gurstelle
- The practical pyromaniac, build fire tornadoes, one-candlepower engines, great balls of fire, and more incendiary devices, William Gurstelle