Stephen Harrigan Books

Challenger Park

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From the author of the acclaimed and best-selling The Gates of the Alamo, a novel of extraordinary power about what it’s like, and what it means, to journey into space as one of today’s...

Sorrowful Mysteries

By Stephen Harrigan

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Part memoir, part mystery: a powerful exploration of the three secrets of Fatima and a man’s journey grappling with his own faithIn 1917, in Fatima, Portugal, three shepherd children claimed...

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.