Mark Jasper Books

Good Night Redwoods

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Good Night Redwoods features Redwood National and State Parks, coast redwoods, redwood facts, banana slugs, Roosevelt elk, redwood roots, redwood bark, park rangers, and more! The tallest living th...

Good Night Halloween

By Adam Gamble Mark Jasper

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Good Night Halloween features a pumpkin patch, black cat, pumpkin carvers, halloween decorations, halloween treats, candy apples, ghost cookies, halloween costumes, halloween parties, reading haunt...

Count to Sleep Grand Canyon

By Adam Gamble Mark Jasper

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Little counters will squeal with delight as they count their way through Grand Canyon National Park, discovering famous attractions and historic landmarks including the Colorado River and river raf...

Count to Sleep Colorado

By Adam Gamble Mark Jasper

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Little counters will squeal with delight as they count their way through the great state of Colorado, discovering famous attractions and historic landmarks including skiers, snowmobilers, Pikes Pea...

Count to Sleep Arizona

By Adam Gamble Mark Jasper

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Little counters will squeal with delight as they count their way through the great state of Arizona, discovering famous attractions and historic landmarks including the Grand Canyon, Colorado River...

Count to Sleep Vermont

By Adam Gamble Mark Jasper

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Little counters will squeal with delight as they count their way through the great state of Vermont, discovering famous attractions and historic landmarks including sugar shacks, snowboarding, Lake...

Count to Sleep Cambridge

By Adam Gamble Mark Jasper

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Little counters will squeal with delight as they count their way through the great city of Cambridge, discovering famous attractions and historic landmarks including Harvard University, Massachuset...

Count to Sleep Dinosaurs

By Adam Gamble Mark Jasper

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What could be more fun than learning to count with dinosaurs? This adorable board book will have little ones squealing with delight as they count all of their favorite dinos including T-rex, Bronto...

Count to Sleep Kauai

By Adam Gamble Mark Jasper

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Little counters will squeal with delight as they count their way through the lovely Hawaiian island of Kauai, discovering famous attractions and historic landmarks including Hanalei Bay, Kalalau Tr...

Impacting Theatre Audiences

By Dani Snyder Young, Matt Omasta

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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.