The Eureka Key
Thomson, Sarah L.![The Eureka Key](https://support.digitalhusky.com/media/annotations/sorted/181/18106280/CHSBZCOP0318106280.jpg)
When middle school puzzle master Sam and history wiz Martina win a contest for a summer trip across the US, they discover they've been drafted into something vastly more extraordinary. Joining another kid on the trip, Theo, a descendant of George Washington himself, they must follow clues to find seven keys left behind by the Founding Fathers. Together the keys unlock Benjamin Franklin's greatest invention--a secret weapon intended to defend t...