John Delaney Books

Worlds Finest

By Joe Shuster, LANDOLL, Alan Burnett, John Delaney, Jerry Siegel, Bob Kane, Mark Evanier

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How To Draw Wonder Woman

By Walter Foster, Ron Boyd, John Delaney

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Describes The Process Of Comic Book Figure Drawing, From Rough Sketch To Finished Illustration, Revealing The Secrets Of How To Draw Wonder Woman As Well As Many Of Her Friends And Foes.

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.