Helaine W. Fendelman Books

We Beat the Street: How a Friendship Pact Led to Success

By George Jenkins, Sampson Davis, Helaine W. Fendelman, Sharon Draper, Rameck Hunt

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Sampson, George, and Rameck could easily have followed their childhood friends into drugdealing, gangs, and prison. Like their peers, they came from poor, single-parent homes in urban neighborhoods...

Money in Your Attic

By Helaine Fendleman, Helaine W. Fendelman, Beverly Jabobson, Jeri Schwart

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The Official price guide, holiday collectibles

By Helaine Fendelman, Helaine W. Fendelman

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All about Appraising

By Helaine W. Fendelman

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Tramp art

By Helaine W. Fendelman

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"Tramp art holds a unique place in the canon of American folk art. Primitive yet astoundingly intricate in their construction, these decorative objects are made through a process of layering elabor...

Instant Expert

By Helaine Fendelman, Susan Kleckner

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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.