John Wallner Books

Old Macdonald Had a Farm: 9

By John Wallner

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A pop-up version of the famous children's song, on board pages. The melody may be heard by pulling a special tab.

City Mouse - Country Mouse

By John Wallner, John C. Wallner

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City mouse-country mouse -- The lion and the mouse -- Belling the cat.

A Picture Book of Helen Keller

By David A. Adler

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Three Little Pigs Lift the Flap

By John Wallner, Peter S. Seymour, Intervisual Communications

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A rebus version of the adventures of the three little pigs who leave home to seek their fortune and encounter the big bad wolf. Each of the rebus pictures is on a flap that may be lifted to reveal...

What Next

By Marcia Leonard

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Winter Beginning to Learn About Ser

By Richard L. Allington

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A Picture Book of Paul Revere

By By David A. Adler Illustrated By John Alexandra Wallner

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One if by land, two if by sea.... So began the midnight ride of Paul Revere.But before he was a member of the Sons of Liberty, before he led raiders in the Boston Tea Party, before he was a silvers...

A Picture Book of George Washington

By John Wallner, David A. Adler, Alexandra Wallner

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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.