Jennifer L. Armstrong Books

In 1855 in Galveston, Texas, ten-year-old Gretel and her two spoiled, complaining sisters all hope to be accepted as a companion to Frau Dimpel, the richest German lady in town.

The dreams of Mairhe Mehan

By Jennifer L. Armstrong

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Mairhe, who lives in an Irish slum in Washington, D.C., in the 1860s, struggles to come to grips with the impact of the Civil War on her family.

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.