Jonathan Case Books

A ten-year-old girl may be the only person who can save humanity from extinction in this exciting graphic novel adventure.It’s been fifty years since a sun shift wiped out nearly all mammal l...

The New Deal

By Jonathan Case

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The Waldorf Astoria is the classiest hotel along the Manhattan skyline in 1930s New York City. When a charming woman named Nina checks in with a high-society entourage, young Frank, a bellhop, and...

Dear Creature

By Various

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A monstrous love balladDeep beneath the waves Grue discovers love after finding Shakespeare’s plays in cola bottles. When his first attempt at companionship in the world above ends . . . poor...

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.