Ann Blackman Books

The Spy Next Door: The Extraordinary Secret Life of Robert Philip Hanssen, the Most Damaging FBI Agent in U.S. History

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"Robert Hanssen was a twenty-five-year veteran FBI agent whose job was to help track enemy agents and make sure that American security was maintained. He was a good man who went to daily mass, sent...

Own Your Own Corporation

By Ann Blackman, Robert T. Kiyosaki, Garrett Sutton

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Seasons of Her Life: A Biography of Madeleine Korbel Albright

By Ann Blackman

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When Madeleine Korbel Albright was sworn in as secretary of state in January 1997, she made headlines around the world. She was the first woman to rise to the top tier of American government and ha...

Seasons of Her Life

By Ann Blackman

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The Spy Next Door

By Ann Blackman, Elaine Shannon

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Wild Rose

By Ann Blackman

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For sheer bravado and style, no woman in the North or South rivaled the Civil War heroine Rose O’Neale Greenhow. Fearless spy for the Confederacy, glittering Washington hostess, legendary bea...

Wild Rose: Rose O'Neale Greenhow, Civil War Spy

By Ann Blackman

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The Spy Next Door

By Ann Blackman, Elaine Shannon

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Off to save the world

By Ann Blackman

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Biography of Julia Taft, a heroic champion of refugees and other victims of natural and man-made disasters.

Off to save the world

By Ann Blackman

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Biography of Julia Taft, a heroic champion of refugees and other victims of natural and man-made disasters.

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.