Cheryl Harness Books

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By Cheryl Harness

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Remarkable Rough-Riding Life of Theodore Roosevelt and the Rise of Empire America, The

By Cheryl Harness

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The eagerly awaited third title in the Cheryl Harness Histories series paints a vibrant portrait of Theodore Roosevelt—Rough Rider, trustbuster, explorer, President, and more—whose bull...

The Remarkable Rough Riding Life of Theodore Roosevelt and the Rise of Empire America Cheryl Harness Histories

By Cheryl Harness

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Thomas Jefferson

By Cheryl Harness

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In her sixth presidential biography for National Geographic, Cheryl Harness illuminates the many sides of Thomas Jefferson: scientist, lawyer, farmer, architect, diplomat, inventor, musician, philo...

The Trailblazing Life of Daniel Boone and How Early Americans Took to the Road

By Cheryl Harness

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Daniel Boone's story is every young adventurer's fantasy: A childhood in Pennsylvania spent hunting on lands shared with Native Americans; a coming-of-age fighting in the French and Indian War; and...

The Trailblazing Life of Daniel Boone and How Early Americans Took to the Road Cheryl Harness Histories

By Cheryl Harness

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The Groundbreaking Chance Taking Life of George Washington Carver and Science and Invention in America Cheryl Harness Histories

By Cheryl Harness

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Abe Lincoln Goes to Washington

By Cheryl Harness

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Now with an updated paperback cover, Abe Lincoln Goes to Washington paints a vivid picture of the Springfield, IL years, when Abe met and married a pretty Kentucky woman, and made his name as a law...

Ghosts of the Nile

By Cheryl Harness

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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.