Jon Klassen Books

The Nest

By Kenneth Oppel, Jon Klassen

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I Want My Hat Back

By Jon Klassen Illustrated By Jon Klassen

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“A wonderful and astonishing thing, the kind of book that makes child laugh and adult chuckle, and both smile in appreciation. . . . Charmingly wicked.” — The New York TimesA bear...

The Rock from the Sky

By Jon Klassen Illustrated By Jon Klassen

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The instant #1 New York Times bestseller!Look up! From the Caldecott Medal–winning creator of the hat trilogy comes a new deadpan gem.There is a spot. It is a good spot.It is the perfect spo...

The Skull

By Jon Klassen Illustrated By Jon Klassen

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A #1 New York Times bestseller!A Kirkus Book Prize Finalist!A New York Times Best Children’s Chapter Book the Year A Wall Street Journal Best Children's Book of the YearCaldecott Medalist an...

The Wolf, the Duck, and the Mouse

By Mac Barnett Illustrated By Jon Klassen

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This is a story about a duck and mouse who get swallowed by a wolf, and then decide to live in his belly.Early one morning a mouse met a wolfand was quickly gobbled up. When a woeful mouse is swall...

What s your favorite animal

By Christopher Raschka, Peter McCarty, Lucy Cousins, Susan Jeffers, Rosemary Wells, Jon Klassen, Lane Smith, Erin E. Stead, Mo Willems, Nick Bruel, Eric Carle, Tom Lichtenheld, Steven Kellogg

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Everybody has a favorite animal. Some like little white dogs or big black cats or hoppy brown bunnies best. Others prefer squishy snails or tall giraffes or yellow spotted leopards. With beautiful...

Egg Marks the Spot

By Jon Klassen, Amy Timberlake

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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.