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- The Wrong Wrights, Chris Kientz and Steve Hockensmith ; illustrated by Lee Nielsen
- Claws and effect, Chris Kientz, Steve Hockensmith, Lee Nielsen
- Nick and Tesla's solar-powered showdown, a mystery with sun-powered gadgets you can build yourself, by "Science Bob" Pflugfelder and Steve Hockensmith; illustrations by Scott Garrett
- Nick and Tesla's high-voltage danger lab, a mystery with electromagnets, burglar alarms, and other gadgets you can build yourself, by "Science Bob" Pflugfelder and Steve Hockensmith ; illustrations by Scott Garrett
- Nick and Tesla's robot army rampage, a mystery with hoverbots, bristlebots, and other robots you can build yourself, by "Science Bob" Pflugfelder and Steve Hockensmith ; illustrations by Scott Garrett
- The Wrong Wrights, Chris Kientz and Steve Hockensmith ; illustrated by Lee Nielsen
- Claws and effect, Chris Kientz, Steve Hockensmith, Lee Nielsen
- Nick and Tesla's high-voltage danger lab, a mystery with electromagnets, burglar alarms, and other gadgets you can build yourself, by "Science Bob" Pflugfelder and Steve Hockensmith ; illustrations by Scott Garrett
- Nick and Tesla's robot army rampage, a mystery with hoverbots, bristlebots, and other robots you can build yourself, by "Science Bob" Pflugfelder and Steve Hockensmith ; illustrations by Scott Garrett