Stephanie Marie Thornton Books

A Most Clever Girl

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A thrilling novel of love, loyalty, and espionage, based on the incredible true story of Elizabeth Bentley, a Cold War double agent spying for the Russians and the United States, from USA Toda...

The Secret History

By Stephanie Marie Thornton

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The Conqueror s Wife

By Jay Ben Markson, Eleanor Caudill, Ines Del Castillo, Emily Bauer, Stephanie Marie Thornton

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And They Called It Camelot

By Stephanie Marie Thornton

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A Most Clever Girl

By Stephanie Marie Thornton

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American Princess

By Stephanie Marie Thornton

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“As juicy and enlightening as a page in Meghan Markle's diary.”—InStyle“Presidential darling, America’s sweetheart, national rebel: Teddy Roosevelt’s swashbuckling daughter Alice springs to life in...

And They Called It Camelot

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An intimate portrait of the life of Jackie O… Few of us can claim to be the authors of our fate. Jacqueline Bouvier Kennedy knows no other choice. With the eyes of the world watching, Jackie uses...

Her Lost Words

By Stephanie Marie Thornton

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From A Vindication of the Rights of Woman to Frankenstein, a tale of two literary legends—a mother and daughter—discovering each other and finding themselves along the way, from USA Tod...

And They Called It Camelot

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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.