Callie Barkley Books

Ellie Steps Up to the Plate

By Callie Barkley, Tracy Bishop

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Amy and the Missing Puppy

By Callie Barkley

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Amy and the missing puppy

By Callie Barkley

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During Spring Break, mystery lover Amy looks for clues to the disappearance of wealthy Ms. Sullivan's Saint Bernard puppy.

Amy and the missing puppy

By Callie Barkley

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During Spring Break, mystery lover Amy looks for clues to the disappearance of wealthy Ms. Sullivan's Saint Bernard puppy.

All about Ellie

By Callie Barkley

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When she wins the lead role in a school play, second-grader Ellie neglects her friends in the Critter Club and their new animal shelter.

All about Ellie

By Callie Barkley

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When she wins the lead role in a school play, second-grader Ellie neglects her friends in the Critter Club and their new animal shelter.

All about Ellie

By Callie Barkley

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When she wins the lead role in a school play, second-grader Ellie neglects her friends in the Critter Club and their new animal shelter.

Liz learns a lesson

By Callie Barkley

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Members of the Critter Club are all excited about their summer plans until Liz learns that, instead of taking an art class, she will have to be in summer school to improve her math skills, but a fu...

Liz learns a lesson

By Callie Barkley

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Liz learns a lesson

By 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.