True Kelley Books

How people learned to fly

By Fran Hodgkins

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A simple look at the trials and errors that led to the development of the airplane.

What the Moon Is Like (Let's-Read-and-Find-Out Book)

By Franklyn M. Branley

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Imagines sights and experiences on a moon visit

What the Moon Is Like Let's Read and Find Out Science Series

By Franklyn M. Branley

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The Skeleton Inside You

By Philip Balestrino

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An introduction to the human skeletal system, explaining how the 206 bones of the skeleton join together, how they grow, how they help make blood, what happens when they break, and how they mend.

How People Learned to Fly

By Fran Hodgkins

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Purple Cow to the Rescue

By Ann Cole

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Suggests a wide range of activities which help you learn about yourself, become more independent, prepare for school, enjoy traveling and moving, and rest after or during a busy day.

I Really Want a Dog

By Susan Breslow, Sally Blakemore

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My Dog Toby

By David Clemesha, Andrea Griffing Zimmerman

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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.