Douglas L. Wilson Books

Herndon's Informants: Letters, Interviews, and Statements about Abraham Lincoln

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Publication of this long-awaited volume makes available for the first time in complete and accessible form the most important source of information on Lincoln's early life. For twenty-five years a...

Lincoln before Washington

By Douglas L. Wilson

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The provocative selections in this book address topics as disparate as William H. Herndon's informants, Lincoln's favorite poem, his mysterious broken engagement, the text of his debates with Dougl...

Lincoln before Washington

By Douglas L. Wilson

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Honor's Voice

By Douglas L. Wilson

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Abraham Lincoln's remarkable emergence from the rural Midwest and his rise to the presidency have been the stuff of romance and legend. But as Douglas L. Wilson shows us in Honor's Voice, Lincoln's...

Thomas Jefferson Abroad Modern Library

By Lucia C. Stanton, Douglas L. Wilson

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Evolution of the Flesh

By Douglas L. Wilson

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Lincoln s Sword

By Douglas L. Wilson

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Jefferson s Books

By Douglas L. Wilson

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Great Lincoln Documents

By The Gilder Lehrman Institute Of American History

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Thomas Jefferson s Library

By Douglas L. Wilson, James Gilreath

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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.