Roger Gastman Books

The History of American Graffiti

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Unprecedented in scope, *The History of American Graffiti* is the definitive story behind the most influential art form of the last one hundred years. Tracing the evolution of the medium from its e...

Freight Train Graffiti

By Ian Sattler, Roger Gastman, Darin Rowland

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Beyond the Streets

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Freight train graffiti

By Roger Gastman

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Street World

By Caleb Neelon, Roger Gastman, Anthony Smyrski

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Art in the Streets

By Jeffrey Deitch, Aaron Rose, Roger Gastman

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Art in the Streets

By Jeffrey Deitch, Aaron Rose, Roger Gastman

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Swindle 9

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Los Angeles Graffiti

By Roger Gastman, Sonja Teri

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Dalek Nickel Plated Angels

By James Marshall, Roger Gastman

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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.