Alvin Tresselt Books

By Caldecott Medal winners Alvin Tresselt and Roger Duvoisin, The Frog in the Well is the charming tale of a brave frog who beats his fears and explores the worldOnce upon a time there was a frog w...

It's Time Now

By Alvin Tresselt

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White snow, bright snow

By Alvin Tresselt

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When it begins to look, feel, and smell like snow, everyone prepares for a winter blizzard.

Hide and Seek Fog

By Alvin Tresselt

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A fog takes over a small village for three days.

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.