The Philadelphia adventure /
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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| Main Author: | |
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| Format: | Book |
| Language: | English |
| Published: |
New York :
Dutton Children's Books,
c1990.
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| Edition: | 1st ed. |
| Subjects: |
