Cathy Hapka Books

Charlotte's Web: The Perfect Word

By Cathy Hapka

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A friend in Rain

By Cathy Hapka

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Based on the motion picture Spirit: Stallion of the Cimarron, this story of friendship and adventure is illustrated with color images from the film.

Seventeen-year-old Nicole dreams of spending the rest of her life with her boyfriend Nate. So when she finds herself on her way to Paris to study abroad without him, she’s less than thrilled. Paris...

How Ariel Met Flounder

By Cathy Hapka

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How Simba Met Timon and Pumbaa Disney's the Lion King

By Cathy Hapka

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Cinderella's Party Clothes

By Cathy Hapka

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Snow White's Apple Pie

By Cathy Hapka

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Walt Disney's Minnie mysteries.

By Cathy Hapka

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Walt Disney's Minnie mysteries.

By Cathy Hapka

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Minnie Mysteries

By Cathy Hapka

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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.