Harry Devlin Books

Cranberry Summer

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Through their hard work at the Fourth of July celebration, Maggie and Mr. Whiskers are able to provide a home for a lost donkey. Includes a recipe for cranberry punch.

Cranberry Valentine

By Wende Devlin

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Maggie, her grandmother, and the sewing circle make Cranberryport a brighter place for Mr. Whiskers when they send him secret valentines.

Cranberry Mystery

By Wende Devlin, Harry Devlin

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Cranberry Autumn

By Wende Devlin

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When Grandmother and Maggie help organize an antique sale in Cranberryport, Mr. Whiskers feels useless until he helps Grandmother make a big profit.

The Trouble With Henriette

By Wende Devlin

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Thinking that Henriette the truffle hound has lost her sense of smell, Jolie's grandfather plans to get rid of her, until she proves her worth in a fancy restaurant in Paris.

To grandfather's house we go

By Harry Devlin

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Presents 22 styles of American homes popular at various periods in our history.

Old Witch Rescues Halloween

By Wende Devlin, Harry Devlin

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Old Witch uses her magic to overcome Mr. Butterbean's edict against Halloween.

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.