Lewis K. Parker Books

Describes the people and action of the Revolutionary War battles of Lexington and Concord, Massachusetts, in which the first blood was shed in the fight for United States independence.

The Battle of Trenton

By Lewis K. Parker

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Describes the people and action of the Revolutionary War battle of Trenton, New Jersey, in which General Washington led his men across the partially frozen Delaware River on the day after Christmas...

Canada Dropping in on Geography

By Lewis K. Parker

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Dropping In On Egypt Dropping in on

By Lewis K. Parker

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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.