Mark Sumner Books

Tapestries: An Anthology

By Cynthia Ward, Kathy Ice, Mark Shepherd, Bruce Holland Rogers, Michael SCOTT, S. M. Stirling, Morgan Llywelyn, Michael A. Stackpole, DAVID DRAKE, S. D. Perry, Carla Montgomery, Billie Sue Mosiman, Peter Friend, Ben Ohlander, Mark Sumner, Hanovi Braddock, Sonia Orin Lyris, David M. Honigsberg

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A Hurloon Minotaur wailing it's grief. A dragon whelp's egg cracking in the firelight. The crashing chaos of armies at war. These are the sights and sounds of the universe of Magic. MAGIC: The Gath...

Magic the Gathering Tapestries: An Anthology

By Kathy Ice

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The Prodigal Sorcerer

By Mark Sumner

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Devil s Tower

By Mark Sumner

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Devil s Engine

By Mark Sumner

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News from the edge

By Mark Sumner

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Insanity, Illinois

By Mark Sumner

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The vampires of Vermont

By Mark Sumner

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The Cursed Land

By Mark Sumner

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The Naturalist

By Mark Sumner

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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.