Douglas G. Greene Books

Detection by Gaslight

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Rich, varied collection of 14 extraordinary Victorian and Edwardian crime stories, many never before published in book form: Kipling's "The Return of Imray"; "The Tragedy of the Life Raft" by Jacqu...

Classic Mystery Stories

By Charles Dickens, Edgar Allan Poe, Jack London

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Diaries of the Popish Plot

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Death Locked in

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Death Locked in

By Douglas G. Greene

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Alleyn and Others

By Ngaio Marsh

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Merrivale, March, and murder

By John Dickson Carr

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Death Locked In

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John Dickson Carr

By Douglas G. Greene

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John Dickson Carr made his reputation through the art of bafflement. Creator of such legendary sleuths as the boisterous Sir Henry Merrivale and the imposing Dr. Gideon Fell, he claimed the "locked...

John Dickson Carr

By Douglas G. Greene

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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.