In 1876, on the eve of the Centennial Exposition in Philadelphia, twenty-year-old Vesper Holly and her friends clash yet again with the archfiend Dr. Helvitius, whose evil schemes plunge them into danger
In 1876, on the eve of the Centennial Exposition in Philadelphia, twenty-year-old Vesper Holly and her friends clash yet again with the archfiend Dr. Helvitius, whose evil schemes plunge them into danger. Reissue.
When President Ulysses S. Grant asks her for help with Philadelphia's Centennial Exposition of 1876, Vesper Holly must thwart the plans of evil Dr. Helvetius
In 1876, on the eve of the Centennial Exposition in Philadelphia, twenty-year-old Vesper Holly and her friends clash yet again with the archfiend Dr. Helvitius, whose evil schemes plunge them into danger in the wild Pennsylvania countryside.