Jon Klassen Books

How Does Santa Go down the Chimney

By Mac Barnett, Jon Klassen

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How Does Santa Go Down the Chimney?

By Mac Barnett Illustrated By Jon Klassen

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A New York Times bestseller!The beloved, multi-award-winning duo of Mac Barnett and Jon Klassen tackle a perennial question. When Santa arrives at a child’s house on Christmas Eve, does he go...

No Bad Feelings

By Jenni Nakken, Jon Klassen

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This Is Not My Hat

By Jon Klassen Illustrated By Jon Klassen

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The 2013 Caldecott Medal winner!From the creator of the #1 New York Times best-selling and award-winning I Want My Hat Back comes a second wry tale.When a tiny fish shoots into view wearing a round...

Triangle

By Mac Barnett Illustrated By Jon Klassen

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Part of the Shapes Trilogy, the books that inspired Shape Island from Apple TV+Multi-award-winning, New York Times best-selling duo Mac Barnett and Jon Klassen conspire again on a slyly funny tale...

Square

By Mac Barnett Illustrated By Jon Klassen

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Part of the Shapes Trilogy, the books that inspired Shape Island from Apple TV+The beguiling second entry in the innovative shape trilogy by multi-award-winning, New York Times best-selling duo Mac...

Circle

By Mac Barnett Illustrated By Jon Klassen

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Part of the Shapes Trilogy, the books that inspired Shape Island from Apple TV+Multi-award-winning, New York Times best-selling duo Mac Barnett and Jon Klassen deliver the final wry and resonant ta...

I Want My Hat Back 10 Copy Board Book Counter Display

By Jon Klassen

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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.