Marc Simmons Books

Rio Grande series

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The American Southwest landscape has been an inspiration and point of departure for Abbey's art and evolving visual perceptions. Her experiences in desert regions and near and on rivers are realize...

The Santa Fe Trail

By Hal Jackson

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The Real Billy the Kid

By Miguel Antonio Otero, Marc Simmons, Ray John De Aragon

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New Mexico

By Marc Simmons

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Last Conquistador

By Marc Simmons

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Mexican War Correspondence of Richard Smith Elliott

By Mark L. Gardner, Richard Smith Elliott, Marc Simmons

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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.