John Broome Books

Greatest Flash Stories Ever Told

By Cary Bates, John Broome, Gardner F. Fox

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Features stories from Comic Cavalcade 24; DC Special Series 1; Flash Comics 1, 66, 86; Showcase 4; The Flash 107, 113, 119, 124-125; 137; 143; 148; 179; The Flash (1987) 2.

All Star Comics Archives Vol. 9

By John Broome

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All Star Comics Archives Vol. 10

By John Broome

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Green Lantern Archives Vol. 5 DC Archive Editions

By John Broome, Gardner F. Fox

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Crisis on Multiple Earths

By John Broome, Gardner F. Fox

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Showcase Presents

By John Broome, Gardner F. Fox

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Showcase Presents

By John Broome, Ed Herron, Bill Finger, Gardner F. Fox

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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.