David Lee Harrison Books

The snoring monster

By David L. Harrison

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While trying to go to sleep, a little boy is convinced that there are monsters in and around his room.

Busy machines

By David L. Harrison

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Rhyming text describes the work performed by lawn mowers, cranes, car crushers, and other machines.

My funny bunny phone book

By David L. Harrison

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A rabbit family makes a variety of telephone calls. Features a large drawing of a telephone with a rotating dial and movable receiver. Spaces are provided on the board pages for the reader to write...

Bugs Bunny

By Kennon Graham, David L. Harrison

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As Bugs Bunny and Porky Pig tour an English castle, Bugs falls asleep and dreams an adventure more exciting than the tour.

Little turtle's big adventure

By David L. Harrison

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When the turtle's pond is filled with dirt, he searches long and hard for a new home.

The doggy detectives

By David L. Harrison

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When Emily Elizabeth is accused of stealing Jetta's gold medal, Clifford never doubts her innocence and, with his fellow doggy detectives, finds the real thief.

The big surprise

By David L. Harrison

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It is Clifford's birthday and his friends are too busy to play with him, but there is a surprise in store for the big red dog.

The big sleep over Clifford the big red dog

By David L. Harrison

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Johnny Appleseed

By David Lee Harrison, Mike Wohnoutka

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Animals Song

By David Harrison

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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.