Christopher Eliopoulos Books

I am Gandhi

By Brad Meltzer, Brad Meltzer Illustrated By Christopher Eliopoulos

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Advocate for peace and nonviolent revolutionary Gandhi is the 12th hero in the New York Times bestselling picture book biography series for ages 5 to 8. As a young man in India, Gandh...

Monster mayhem

By Christopher Eliopoulos

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Zoe, a science-obsessed girl finds herself in the middle of one of her favorite monster movies. Can she invent her way out of disaster while also saving the monster who has become her friend?

Cosmic Commandos

By Christopher Eliopoulos

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I Am Sacagawea

By Christopher Eliopoulos, Brad Meltzer

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Ordinary People Change the World

By Christopher Eliopoulos, Brad Meltzer

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I am Jackie Robinson

By Christopher Eliopoulos, Brad Meltzer

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I Am Helen Keller

By Christopher Eliopoulos, Brad Meltzer

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The Giggles Are Coming

By Christopher Eliopoulos

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A couple of friends can't keep from laughing during class on the first day of school, in this companion to The Yawns Are Coming from the illustrator of the Ordinary People Change the World series!T...

Monster Mayhem

By Christopher Eliopoulos

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From the creator of Cosmic Commandos comes a funny, action-packed graphic novel adventure—when a science-obsessed girl finds herself in the middle of one of her favorite monster movies, can s...

Giggles Are Coming 8 Copy Mixed Floor Display W Riser and Signed Copies

By Christopher Eliopoulos

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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.