Jon Peterson Books

The Elusive Shift

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How the early Dungeons & Dragons community grappled with the nature of role-playing games, theorizing a new game genre.When Dungeon & Dragons made its debut in the mid-1970s, followed shortly there...

Dungeons & Dragons Art & Arcana

By Michael Witwer

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An illustrated guide to the history and evolution of the beloved role-playing game told through the paintings, sketches, illustrations, and visual ephemera behind its creation, growth, and continue...

Dungeons & Dragons Art & Arcana Special Edition, Boxed Book & Ephemera Set

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A deluxe, special edition package containing art prints, ephemera, and the illustrated guide to the history and evolution of the beloved role-playing game as told through the paintings, sketches, a...

Searching the Andes for Albert Schweitzer

By Jon Peterson

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Playing at the World

By Jon Peterson

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Zones of Control

By Matthew G. Kirschenbaum, Pat Harrigan, James F. Dunnigan

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Game Wizards

By Jon Peterson

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Discover the colorful history of the table-top RPG phenomenon, Dungeons & Dragons, as a D&D expert examines its surprising successes, setbacks, and controversies.“The battle over Dungeons & Dragons...

Elusive Shift

By Jon Peterson

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Playing at the World, 2E, Volume 1

By Jon Peterson

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The first volume of two in a new, updated edition of the 2012 book Playing at the World, which charts the vast and complex history of role-playing games.This new edition of Playing at the World is...

Proceed with Caution

By Jon Peterson

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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.