Michael Mayo Books

Jimmy Quinn was a gunman, bootlegger, and bagman, running with mobsters the likes of Lucky Luciano, Meyer Lansky, and Vincent "Mad Dog" Coll, until a bullet in the leg and the murder of Arnold Roth...

Everybody goes to Jimmy s

By Mike Mayo

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Young Jimmy Quinn is delivering a bribe for the infamous racketeer Arnold Rothstein when a bomb goes off on Wall Street, killing thirty people and scaring every banker in the city right down to his...

Jimmy and Fay

By Mike Mayo

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"It's March 2, 1933. King Kong is premiering at Radio City Music Hall, and Fay Wray is about to become the most famous actress on earth. So what's she doing hanging around a rundown Manhattan speak...

Everybody Goes to Jimmy s

By Qarie Marshall, Michael Mayo

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Flea Market Operation s Manual

By Mike R. Mayo

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Spirit Speaks

By Michael Mayo

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Spirit Speaks

By Michael Mayo

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James Joyce and the Jesuits

By Michael Mayo

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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.