Don Hoffman Books

A very special snowflake

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When Jeff and Veronica search for their new puppy, Snowflake, during a fluffy snowfall, everyone they ask for help misunderstands what they are talking about.

Billy Is a Big Boy Are You Big Too

By Don Hoffman

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Abigail Is a Big Girl Are You Big Too

By Don Hoffman

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Good Morning Good Night Billy Abigail Billy and Abigail Board Books

By Don Hoffman

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A Counting Book with Billy Abigail Billy and Abigail Board Books

By Don Hoffman

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Abigail is a Big Girl Billy Abby

By Don Hoffman

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Tony the ferry riding pigeon

By Don Hoffman

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Tony the pigeon rides from Manhattan to New Jersey every day with his best friend Nate. Find out how Tony calls on his pigeon friends and braves a snowstorm to save the day.

Tony the ferry riding pigeon

By Don Hoffman

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Tony the pigeon rides from Manhattan to New Jersey every day with his best friend Nate. Find out how Tony calls on his pigeon friends and braves a snowstorm to save the day.

Abigail Is a Big Girl Are You Big Too

By Don Hoffman

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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.