The Philadelphia adventure / Lloyd Alexander.

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.

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Bibliographic Details
Online Access: Full Text (via Internet Archive)
Main Author: Alexander, Lloyd
Format: eBook
Language:English
Published: New York : Dutton Children's Books, c1990.
Edition:1st ed.
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Call Number: PZ7.A3774 Ph 1990
PZ7.A3774 Ph 1990 Available