Bill Matheny Books

Alfred to the rescue

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Whether he is treating Bruce Wayne's injuries or helping to trap the Penguin, Alfred is also a hero.

Bane is seeking revenge on the criminal doctor who changed him from an ordinary criminal into an enhanced super-criminal, and it is up to Batman to stop him--and prevent the doctor from creating an...

Sanity plea

By Bill Matheny

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The Joker is trying to prove his sanity as a bid to secure his transfer from Arkham Asylum to Gotham State Pennitentiary.

Batman Strikes

By Bill Matheny, Terry Beatty, Christopher Jones, Heroic Age

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Batman Strikes

By Bill Matheny, Terry Beatty, Christopher Jones, Heroic Age

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In the Clutches of the Penguin

By Bill Matheny

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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.