Bob Pflugfelder
Nick and Tesla's High-Voltage Danger Lab: A Mystery with Electromagnets, Burglar Alarms, and Other Gadgets You Can Build Yourself
Nick and Tesla's Robot Army Rampage: A Mystery with Hoverbots, Bristle Bots, and Other Robots You Can Build Yourself
Nick and Tesla's High-Voltage Danger Lab: A Mystery with Electromagnets, Burglar Alarms, and Other Gadgets You Can Build Yourself
Nick and Tesla's Special Effects Spectacular: A Mystery with Animatronics, Alien Makeup, Camera Gear, and Other Movie Magic You Can Make Yourself!
Nick and Tesla's Secret Agent Gadget Battle
Nick and Tesla's Super-Cyborg Gadget Glove: A Mystery with a Blinking, Beeping, Voice-Recording Gadget Glove You Can Build Yourself
Nick and Tesla's Super-Cyborg Gadget Glove: A Mystery with a Blinking, Beeping, Voice-Recording Gadget Glove You Can Build Yourself
Nick and Tesla's Special Effects Spectacular: A Mystery with Animatronics, Alien Makeup, Camera Gear, and Other Movie Magic You Can Make Yourself!
Nick and Tesla's Robot Army Rampage: A Mystery with Hoverbots, Bristle Bots, and Other Robots You Can Build Yourself
Nick and Tesla's Secret Agent Gadget Battle
Nick and Tesla's Robot Army Rampage: A Mystery with Hoverbots, Bristlebots, and Other Robots You Can Build Yourself