Jeff Campbell Books

"Look up from your cocktail umbrella and take in the real Hawaii. This is where active volcanos and coral craters vie for attention with art galleries and maestro chefs. The surf's up in this laid-...

Gaslight Grimoire

By J. A. Campbell

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A collection of eleven all new tales of mystery and dark fantasy featuring Sherlock Holmes, master of deductive reasoning, confronting the irrational, the unexpected, and the fantastic in the weird...

Last of the giants

By Jeff Campbell

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Today, an ancient world is vanishing right before our eyes: the age of giant animals. Over 40,000 years ago, the earth was ruled by megafauna: mammoths and mastodons, saber-toothed tigers and giant...

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.