Don Troy Books

W.E.B. DuBois

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A brief biography of the African American educator and activist who helped found the NAACP and worked much of his life to gain equitable treatment for his people.

Booker T. Washington

By Don Troy

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Describes the life of Booker T. Washington, his accomplishments as an educator, and his impact on the fight for equality.

Harriet Ross Tubman

By Don Troy

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A biography of the black woman whose cruel experiences as a slave in the South led her to seek freedom in the North for herself and for others through the Underground railroad.

Educators and Speakers Journey to Freedom The African American Library

By John Passaro, Don Troy, Cynthia Fitterer Klingel

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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.

Don Troy Books

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How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

What is an EAN and How Does it Relate to an ISBN?