Justin Martell Books

Bride of Ha Ha Horror

By Zac Amico, Sarah E Glenn, Justin Martell, Monstermatt Patterson, Gwen Mayo

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Eternal Troubadour: The Improbable Life Of Tiny Tim

By Justin Martell, Alanna Wray McDonald

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As Bing Crosby once put it, the rise of Tiny Tim represents ‘one of the most phenomenal success stories in show business.’ In 1968, after years of playing dive bars and lesbian cabarets on the Gree...

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.