Robert C. Hayden Books

Chronicles the achievements of nine Afro-Americans responsible for inventions related to important parts of modern life such as refrigeration, electric lighting, and transportation.

7 African-American scientists

By Torey Hayden, Robert C. Hayden

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Examines the lives and achievements of seven black Americans who left their mark through scientific work, from Benjamin Banneker to Matthew Henson.

Eleven African American Doctor (Achievers : African Americans in Science and Technology)

By Torey Hayden, Robert C. Hayden

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Chronicles the achievements of eleven Afro-American physicians whose contributions helped raise the country's health standards through medical practice, research, or teaching.

African Americans in Boston

By Robert C. Hayden

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Eight Black American Inventors

By Robert C. Hayden

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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.