Peter Spier Books

To market! To market!

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A selection of traditional nursery rhymes with illustrations that reflect early American town and country life.

Fast slow high low

By Peter Spier

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Opposite concepts such as full-empty, strong-weak, more-less are illustrated by several pairs of contrasting pictures.

The Cow Who Fell in the Canal

By Phyllis Krasilovsky, Peter Spier

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The Fox Went Out On A Chilly Night

By Peter Spier

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London Bridge is falling down!

By Peter Spier

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Illustrates the singing game about London Bridge's falling down. Includes a history of the bridge and music.

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.