Theodore F. Wolff Books

Enrico Donati first found acclaim when the grand master of Surrealism, Andre Breton, anointed him the movement's Wunderkind in 1942, soon after the young Italian's arrival in New York from Paris. H...

Joyce Treiman

By Michael Duncan

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Joyce Treiman, one of the finest American painters of the late twentieth century, was also one of the most individualistic, combining virtuosic draftsmanship and expressive brushwork with a lifelon...

Wildeworld

By Theodore F. Wolff

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"The work and nearly sixty-year career of John Wilde are an anomaly, inspired by the art of the early Flemish, German, and Italian Renaissance. Wilde has revived the traditional technique of silver...

Wildeworld

By Theodore F. Wolff, Russell Panczenko, John Wilde

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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.