Roy H. Williams Books

Basic Statistics

By Roy H. Williams, Philip F. Rice, Phillip Taylor

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And Justice For All The Untold History of Dallas

By Roy H. Williams, Kevin J. Shay

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Covers little-known history of Dallas, gets into how the city formed and how minorities struggled for their political and civil rights through the decades. Review: 'Dallas remains among the least...

Polaris Pointers

By Roy H. Williams

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The Wizard of Ads on CD

By Roy H. Williams

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Secret Formulas of the Wizard of Ads

By Roy H. Williams

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Magical Worlds of the Wizard of Ads

By Roy H. Williams

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The Wizard of Ads Trilogy on CD 3 Volumes

By Roy H. Williams

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Raising the Flag on Iwo Jima

By Roy H. Williams

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WTF

By Roy H. Williams, Brian Scudamore

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Pendulum

By Roy H. Williams

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Politics, manners, humor, sexuality, wealth, even our definitions of success are periodically renegotiated based on the new values society chooses to use as a lens to judge what is acceptable. Are...

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.