John H Ritter Books

Fenway Fever

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Tom Gallagher is in a tight spot. The fate of the Dillontown team rests on the outcome of one baseball game, winner take all. If Tom's team loses, they lose their field too. But how can they possib...

Fenway fever

By John H. Ritter

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Twelve-year-old Alfredo "Stats" Pagano and Boston Red Sox pitcher Billee Orbitt work together to break a potential curse at Fenway Park.

This family is driving me crazy

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The Boy Who Saved Baseball

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Boy Who Saved Baseball

By John H. Ritter

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Boy Who Saved Baseball

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The Desperado Who Stole Baseball

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The Desperado Who Stole Baseball

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Desperado Who Stole Baseball

By John Ritter

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The exciting prequel to the bestselling The Boy Who Saved BaseballThe fate of a Wild West gold-mining town rests in the hands of two individuals. One is a twelve-year-old boy with a love and instin...

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.