Edward Hannigan Books

Batman in Terror on the High Skies

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Batman is assisted by eleven-year-old Toby Tyler in battling the Joker, who has taken to the skies in command of an airborne pirate ship.

Essential Power Man and Iron Fist Vol. 1 Marvel Essentials

By Chris Claremont

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Fantastic Four VS. The Frightful Four

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Superman

By Louise Simonson, Dan Jurgens, Lee Moder, Tom Grummett, Jackson Guice, Jones Gerard, Jeph Loeb, Edward Hannigan, Karl Kesel, M. D. Bright, Roger Stern, Jon Bogdanove

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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.