Jenn Harney Books

Smelly Kelly and His Super Senses

By Beth Anderson Illustrated By Jenn Harney

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James "Smelly" Kelly used his super-senses and intelligence to make sure that the New York City subway in the 1930s ran safely throughout his lifetime and beyond.James Kelly smelled EVERYTHING: rat...

Probably a Narwhal

By Shelley Moore Thomas Illustrated By Jenn Harney

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Friendship is the winner in this hilarious contest between a girl who blames a narwhal for her mess and the narwhal who materializes to defend himself.This girl's room is an amazing mess between th...

CATastrophe!

By Ann Marie Stephens Illustrated By Jenn Harney

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Nine kittens go on an exciting boating adventure that's a (funny) CATastrophe in this playful picture book that demonstrates the key math concept of patterns.A crew of hungry kittens and their capt...

Hornswoggled

By Jenn Harney, Josh Crute

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Pirate Penguin

By Jenn Harney, Mike Allegra

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Shiver-by-the-Sea 1: Bella and the Vampire

By Erin Dionne Illustrated By Jenn Harney

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For fans of Eerie, Elementary, Bailey School Kids, and The Notebook of Doom, the first book in a magical, spooky new chapter book series about friendship, community restoration and involvement, and...

Shiver-by-the-Sea 1: Bella and the Vampire

By Erin Dionne Illustrated By Jenn Harney

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Now in paperback! For fans of Eerie, Elementary, Bailey School Kids, and The Notebook of Doom, the first in a magical, spooky new chapter book series about friendship, community restoration an...

Shiver-by-the-Sea 2: The Were-woof

By Erin Dionne Illustrated By Jenn Harney

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For fans of Eerie, Elementary, Bailey School Kids, and The Notebook of Doom, the second book in a magical, spooky new chapter book series about friendship, community restoration and involvement, an...

Shiver-by-the-Sea 2: The Were-woof

By Erin Dionne Illustrated By Jenn Harney

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Now in paperback! For fans of Eerie, Elementary, Bailey School Kids, and The Notebook of Doom, the second book in a magical, spooky new chapter book series about friendship, community restoration a...

Shiver-by-the-Sea 3: Creature from the Gloppy Green Pool

By Erin Dionne Illustrated By Jenn Harney

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The third book in this spooky, sweet series makes a big splash as Bella and her friends help a new mucky monster. Perfect for fans of Eerie, Elementary, Bailey School Kids, and The Notebook of Doom...

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.