Peter Gaffney Books

This volume in the Seven-Day Scholar series brings to life significant moments in our nation's heroic tragedy, the Civil War, and coincides with its 150th anniversary. The book is organized into fi...

The seven day scholar

By Dennis Gaffney

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Seven Day Scholar the Civil War

By Peter Gaffney, Dennis Gaffney

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Dales Tales

By Peter Gaffney

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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.