Chris Duffy Books

Scooby Doo

By Terrance Griep, Barbara Slate, Dan Slott, Sam Henderson, Chris Duffy

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Scooby Doo

By Michael Kraiger, Terrance Griep, Matt Wayne, Michael Kupperman, Chris Duffy

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Scooby-Doo VOL 03: All Wrapped Up! (Scooby-Doo (Graphic Novels))

By Various, Chris Duffy

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Third time's the charm! The Mystery Machine gang put on their detecting caps for another volume's worth of hairraising adventures with the pseudosupernatural, as presented in the stories "Hajj Dodg...

Scooby Doo

By Various

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Bizarro World

By Various

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Bizarro World

By Various

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Scooby Doo

By Terrance Griep, Paul S. Newman, John Rozum, Chris Duffy, Joe Edkin

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Ten adventures of Scooby and the gang.

Scooby Doo

By Terrance Griep, Chuck Kim, John Rozum, Chris Duffy, Joe Edkin

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Ten adventures of Scooby and the gang.

History Comics: The Wild Mustang

By Chris Duffy, Falynn Koch, Chris Duffy, (Scénariste De Bandes Dessinées)

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An American Library Association 2021 Best Graphic Novel for ChildrenTurn back the clock with History Comics, First Second's new nonfiction graphic novel series! In this volume, learn how wild musta...

History Comics: The Wild Mustang: Horses Of The American West

By Chris Duffy, Falynn Koch, Chris Duffy, (Scénariste De Bandes Dessinées)

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"Learn how wild mustangs were first introduced to America and how they still roam free today. On the North American plains, wild mustangs have roamed for generations ... shaping human history and s...

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.