Owen Jordan Books

Harold and the Purple Crayon

By Crockett Johnson

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Harold goes for an adventurous walk in the moonlight with his purple crayon

A Harry the Dirty Dog Treasury: Three Stories

By Gene Zion

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Harold and the Purple Crayon Purple Crayon Books

By Crockett Johnson

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Norman the doorman

By Don Freeman

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Norman, the doorman of a mouse hole in an art museum, desires nothing more in life than to leisuely inspect the art treasures in the upstairs galleries.

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.