Jack McCallum Books

Seven Seconds or Less

By Jack McCallum

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Pay-off pitch

By Clair Bee

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As a member of the college baseball team at State University, Chip Hilton finds his sense of sportsmanship challenged when he is wrongfully suspected of playing for a professional team.

Leonard Wood

By Jack Edward McCallum

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Shaq Attaq!

By Shaquille O Neal

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Dream Team

By Jack McCallum

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Sports Illustrated Wrestling

By Jack McCallum

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Bleeding Orange

By Jim Boeheim, Jack McCallum

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Bleeding Orange

By Jim Boeheim, Jack McCallum

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Real Hoosiers

By Jack McCallum

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Real Hoosiers

By Jack McCallum

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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.