S07E16 Lisa the Iconoclast
Whilst researching a history project,Lisa discovers that Jebediah Springfield,the town's founder,was actually a pirate who stole public funds to make a silver tongue for himself. Her findings are not popular with the township and so she asks that Springfield's body be exhumed for proof. The tongue is nowhere to be found but museum curator Hollis Hurlbut admits to Lisa that he stole it. So as not to disillusion the town's people Lisa and Hollis agree to keep this secret so that Jebediah will always be fondly remembered.