Callie Barkley Books

Liz s night at the museum

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Liz is excited for her sleepover at the museum until she hears some spooky noises that may turn this sleepover into a nightmare.

The Critter Club

By Callie Barkley

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Amy meets her stepsister: Amy looks forward to meeting her future stepsister, but things don't start off well. Ellie's lovely idea: The Critter Club wants to do some Valentine's Day fundraising ac...

Amy is a little bit chicken

By Callie Barkley

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Amy and her friends care for some chickens and prepare for the Santa Vista Quiz Bowl in the thirteenth book of The Critter Club series!

The Critter Club Set 2

By Marsha Riti, Callie Barkley

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The Critter Club 3

By Callie Barkley

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Join Amy, Ellie, Liz, and Marion with these three heartwarming Critter Club books in one purr-fect paperback edition! Meet the Critter Club: Amy, Ellie, Liz and Marion, and all their animal friends...

Ellie steps up to the plate

By Callie Barkley

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When Ellie joins a softball team, she quickly realizes that the sport is harder than it looks! Is she meant only for the stage, not the field? And what happens when Ellie goes searching in the wood...

Ellie steps up to the plate

By Callie Barkley

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Liz and the Nosy Neighbor

By Callie Barkley, Tracy Bishop

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Liz and the Nosy Neighbor

By Callie Barkley

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Marion Takes Charge

By Marsha Riti, Callie Barkley

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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.