Ernest Dudley Books

A mysterious series of factory and warehouse fires was creating havoc, and the police did not appear to be getting on the track. So the Globe Newspaper hired private eye Nat Craig to see what he co...

Mr. Walker wants to know

By Ernest Dudley

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Mr. Walker, the Cockney rag and bone man, is always bumping into other people's troubles. After the murder of old Cartwright in the jeweller's shop, he becomes involved in adventures with his frien...

Two face

By Ernest Dudley

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Mouse-like Mitsi Linden arrives in Paris only to encounter tragedy and disaster -- until Larry Curtis takes her life, and her heart, in the palm of his hand. Larry transforms Mitsi into a glamorous...

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.