Stewart Mark Books

A biography of the native Zairian who never picked up a basketball until he was sixteen years of age but learned the game quickly and became an All-Star.

Emmitt Smith

By Stewart Mark

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A brief biography of the star running back who helped the Dallas Cowboys win Super Bowls in 1993, 1994, and 1996.

Jerry Rice

By Stewart Mark

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Profiles the record-breaking receiver, from his childhood in Mississippi to his success with the San Francisco 49ers.

John Franco

By Stewart Mark

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A brief biography of the All-Star relief pitcher of the New York Mets.

Kenny Smith

By Stewart Mark

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Traces the basketball career of the point guard who starred at the University of North Carolina and then helped the Houston Rockets to win their first NBA championship in 1994.

Lyn St. James

By Stewart Mark

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Presents the life and career of Evelyn St. James, whose love of mathematics and sports led to a career as a professional race car driver.

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.