Erin Guendelsberger Books

Little Red Sleigh

By Erin Guendelsberger

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Let s Make a Friend

By Sesame Workshop Staff

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The Messy Alphabet Book

By Sesame Workshop

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Inky the Octopus

By Erin Guendelsberger

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Out of this tank, I must be free. I must explore the open sea! Follow Inky the octopus as he escapes from the National Aquarium of New Zealand to the ocean! Based on a true story, Inky the Octopus...

Hide and Seek Chicago

By Mattia Cerato, Erin Guendelsberger

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Hide and Seek San Francisco

By Mattia Cerato, Erin Guendelsberger

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Hide and Seek Boston

By Mattia Cerato, Erin Guendelsberger

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Hide and Seek New York City

By Mattia Cerato, Erin Guendelsberger

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Cookies for Elmo

By Erin Guendelsberger, Sesame Workshop

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Christmas Blessing

By Gail Yerrill, Erin Guendelsberger

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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.