Peter Gallagher Books

Complex plotting and well-rounded characters highlight Gallagher's intricate serial killer whodunit. First, two Chicago prostitutes have their throats slit by a murderer who places lit votive candl...

Legends of the Seminoles

By Guy Labree, Peter Gallagher, Betty Mae Jumper

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Late at night around the campfires, Seminole children safely tucked into mosquito nets used to listen to the elders retelling the old stories and legends. Now these priceless legends of mischieviou...

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.