Tony Perrottet Books

What was it like to attend the ancient Olympic Games?With the summer Olympics’ return to Athens, Tony Perrottet delves into the ancient world and lets the Greek Games begin again. The acclaim...

Napoleon s Privates

By Tony Perrottet

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Route 66 AD

By Tony Perrottet

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Cuba Libre!

By Tony Perrottet

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The surprising story of Che Guevara, Fidel Castro, and the scrappy band of rebel men and women who followed them.Most people are familiar with the basics of the Cuban Revolution of 1956–1959:...

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.