The Philadelphia Adventure
by Lloyd Alexander · March 1, 1992
Popularity 14
Vesper Holly has foiled murderers, crossed mountains, and narrowly escaped earthquakes. Now she's home in Philadelphia, where she can relax-until President Ulysses S. Grant asks for her help. The Centennial Exposition of 1876 is about to begin, and luminaries from around the world will be there. But so will Vesper's arch-nemesis, the evil Doctor Helvetius. There's only one person who can thwart his evil plans--Vesper Holly!
Juvenile fictionAdventure and adventurersFictionVesper Holly (Fictitious character)Adventure storiesChildren's fictionAdventure and adventurers, fictionPhiladelphia (pa.), fiction