Jonathan H. Gray Books

Duck Avenger

By Ezio Sisto, Jonathan H. Gray, Alberto Lavoradori, Nicole Seitler, Stefano Intini, Travis Seitler, Alessandro Sisti, Deron Bennett

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"At last--it's the new-to-USA Disney Comics thrill ride that fans and collectors have requested most! When Scrooge McDuck buys mysterious, ultra-hi-tech Ducklair Tower, Donald sneaks onto a forgott...

Mickey Mouse

By Jonathan H. Gray, Alonzo Simon, Justin Eisinger

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When a bizarrely trollish crimefighter hits Mouseton, neither Mickey nor Pegleg Pete know what to expect except one crook-smashing practical joke after another! Then Mickey and Eega Beeva meet The...

Darkwing Duck Just Us Justice Ducks

By Jonathan H. Gray, Robert Bat, John Blair Moore, Bobbi Jg Weiss, Cosme Quartieri

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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.