Valerie Garfield Books

Harold and the Purple Crayon

By Valerie Garfield, Patricia Lakin

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The birthday present

By Valerie Garfield

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When Harold is unable to sleep, he uses his purple crayon to go on an adventurous walk to find the perfect birthday gift for his mother.

Adventures of Harold and his friends

By Valerie Garfield

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Four stories from the Harold and the purple crayon series. Follow Harry as he travels in a world filled with plants, insects, and animals that are as big or bigger than he is.

Alpha Tales Letter M Monkey1s Miserable Monday Grades PreK 1

By Valerie Garfield

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Harold and the Purple Crayon

By Valerie Garfield

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Harold and the Purple Crayon

By Valerie Garfield

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Monkey s Miserable Monday Alphatales

By Valerie Garfield

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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.