Warren G. Harris Books

Clark Gable

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Clark Gable arrived in Hollywood after a rough-and-tumble youth, and his breezy, big-boned, everyman persona quickly made him the town’s king. He was a gambler among gamblers, a heavy drinker in th...

Natalie and R.J.

By Warren G. Harris

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Cary Grant

By Warren G. Harris

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Lucy and Desi

By Warren G. Harris

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Natalie R.j. holly

By Warren G. Harris

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Gable Lombard

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Clark Gable: A Biography

By Warren G. Harris

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"There really was a Hollywood, a place of fashionable men and gorgeous women and the all-powerful studio system that allowed them to defy the conventions that governed the rest of the country. Cla...

Gable & Lombard

By Warren G. Harris, Warren Harris

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Audrey Hepburn

By Warren G. Harris

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Lucy and Desi: The Legendary Love Story of Television's Most Famous Couple

By Warren G. Harris

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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.