Tobi Tobias Books

A child ponders the pleasant results of serendipity, such as getting extra pieces from the gumball machine, having a peanut in your pocket when you meet a squirrel, or finding a five-dollar bill.

Arthur Mitchell

By Tobi Tobias

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A biography of the black ballet dancer who gave up his career as a star with the New York City Ballet to found the Dance Theatre of Harlem.

Arthur Mitchell

By Tobi Tobias

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A biography of the black ballet dancer who gave up his career as a star with the New York City Ballet to found the Dance Theatre of Harlem.

Maria Tallchief

By Tobi Tobias, Michael Hampshire

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Maria Tallchief A Crowell biography

By Tobi Tobias

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Marian Anderson

By Tobi Tobias

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A biography of the Negro concert artist who ultimately triumphed in her struggle for recognition.

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.