Lois Walfrid Johnson Books

In 1907 Wisconsin, Kate and her friends discover a timber swindler while visiting their Indian friend, Running Deer, and suspect that Kate's uncle, newly arrived from Sweden, may be involved.

Mysterious hideaway

By Lois Walfrid Johnson

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Kate, Anders, and Erik investigate baffling clues that lead them to tunnels in the woodpile, stolen food, and a hidden ladder.

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.

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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.