Kathleen Ernst Books

Caroline takes a chance

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When Caroline and her friends Rhonda and Seth go out fishing, they sight an American supply boat being pursued by a British warship, and Caroline must come up with a daring plan to notify the town...

Hearts of Stone

By Kathleen Ernst

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When her father goes off to join the Yankee troops, fourteen-year-old Hannah fears her family will be torn apart by the Civil War. But nothing prepares her for her mother's sudden death. Hannah now...

Clues in the Shadows

By Kathleen Ernst

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Trouble at Fort LA Pointe History Mysteries American Girl

By Kathleen Ernst

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Whistler in the Dark American Girl History Mysteries Paperback

By Kathleen Ernst

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Changes For Caroline Turtleback School Library Binding Edition American Girls Collection Caroline 1812

By Kathleen Ernst

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Meet Caroline Turtleback School Library Binding Edition American Girl

By Kathleen Ernst

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A Surprise For Caroline Turtleback School Library Binding Edition American Girl

By Kathleen Ernst

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Traitor in the Shipyard

By Kathleen Ernst

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Trouble at Fort LA Pointe

By Kathleen Ernst

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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.