Crispin Nathaniel Haskins Books

The JAWSfest murders

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Another perfect summer is in full swing on Martha's Vineyard when Charles Williams arrives for the vacation of a lifetime. Charles is one of thousands who are there for the celebration of the 1975...

White shark

By Crispin Nathaniel Haskins

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Charles Williams is back on the island and this time with a more permanent stay in mind. Charles and Police Chief Laurie Knickles are getting married, and their friends have congregated for the fes...

Deadly catch

By Crispin Nathaniel Haskins

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Charles Williams returns to Martha's Vineyard for a romantic visit with Edgartown Police Chief Laurie Knickles. The Monster Shark Fishing Tournament is taking up Laurie's time, but the sharks aren...

Dead and Buried

By Crispin Haskins

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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.