Norma Jean Lutz Books

In 1939, in Seattle, Washington, as the Japanese invasion of China increases general hostility towards Japanese Americans, nine-year-old Mandy finds the adjustment to her new school as well as the...

Daria solves a mystery

By Norma Jean Lutz

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In 1862, in Cincinnati, Ohio, as the Civil War progresses, eleven-year-old Daria and her twin brother, Andrew, begin to suspect that one of their mother's boarders is a Confederate spy.

Maria takes a stand

By Norma Jean Lutz

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In 1914, in Minneapolis, Minnesota, as the war in Europe increases general hostility towards German Americans, twelve-year-old Maria Schmidt finds inspiration in the women's suffrage movement and d...

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.