Mary Downing Hahn Books

The Gentleman Outlaw and Me

By Mary Downing Hahn

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All the lovely bad ones

By Mary Downing Hahn

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While spending the summer at their grandmother's Vermont inn, two prankster siblings awaken young ghosts from the inn's distant past who refuse to "rest in peace."

The Old Willis Place

By Mary Downing Hahn

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Stepping on Cracks

By Mary Downing Hahn

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Wait till Helen comes

By Mary Downing Hahn

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Following the Mystery Man

By Mary Downing Hahn

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The Doll in the Garden

By Mary Downing Hahn

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December stillness

By Mary Downing Hahn

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Tallahassee Higgins

By Mary Downing Hahn

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The old Willis place

By Mary Downing Hahn

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Tired of the rules that have bound them ever since "the bad thing happened," twelve-year-old Diana ignores her brother's warnings and befriends the daughter of the new caretaker, setting in motion...

How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.