John Plesent Gray Books

When All Roads Led to Tombstone

By John Plesant Gray, John Plesent Gray, John Duncklee, W. Lane Rogers

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In 1940, Gray wrote this manuscript containing reminiscences about the Gray family's settlement in Arizona and New Mexico in the 1880s and 1890s. He relates his father's problems with land purchas...

Tombstone s Violent Years 1880 1882 as Remembered by John Plesent Gray

By John Plesent Gray

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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.