Lois H. Gresh Books

THE SHAPE OF ANCIENT EVIL A series of grisly murders rocks London. At each location, only a jumble of bones remains of the deceased, along with a bizarre sphere covered in strange symbols. The son...

Sherlock Holmes vs. Cthulhu: The Adventure of the Neural Psychoses

By Lois H. Gresh

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The second novel in Lois H. Gresh's Sherlock Holmes vs. Cthulhu series.Amelia Scarcliffe's monstrous brood, harbingers of Cthulhu, will soon spawn. Her songs spell insanity, death... and illimitabl...

Sherlock Holmes vs. Cthulhu: The Adventure of the Innsmouth Mutations

By Lois H. Gresh

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The third novel in 6 times New York Times best-selling author Lois H. Gresh's Sherlock Holmes vs. Cthulhu series.THE OBLITERATING SHADOWThe deadly dimensions over London have been sealed, and the m...

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.