Stewart Graff Books

The elephant

By Slawomir Mrozek

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Helen Keller

By Stewart Graff, Polly Anne Graff

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From the age of a year and a half, Helen Keller could not hear. She could not see, and she did not speak. She lived in a dark and lonely world--until Annie Sullivan came to teach her. Annie traced...

George Washington

By Stewart Graff

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HELEN KELLER

By Stewart Graff

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The wayfarer's tree,

By Stewart Graff, Polly Anne Graff, Anne Colver

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Joel's expectation of a dull year in Concord is changed after he meets Henry David Thoreau.

Helen Keller

By Stewart Graff, Polly Anne Graff

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Helen Keller

By Stewart Graff

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A biography of the blind and deaf woman who rose above her physical disabilities to international renown and who helped other handicapped persons to live fuller lives.

John Paul Jones Discovery Biographies

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A world explorer: Hernando Cortes.

By Stewart Graff

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A biography of the sixteenth-century Spanish explorer who discovered the Aztec empire.

Squanto Indian Adventurer

By Stewart Graff

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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.