William J. Ryczek Books

When Johnny came sliding home

By William J. Ryczek

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When Johnny Came Sliding Home

By William J. Ryczek

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The Yankees in the Early 1960s

By William J. Ryczek

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The Amazin Mets 1962 1969

By William J. Ryczek

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"Based on interviews with more than one hundred former players, and extensive media research, this book traces the history of the New York Mets from their infamous first season--they finished at 40...

Connecticut Gridiron

By William J. Ryczek

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"This narrative history of minor league football teams in Connecticut during the 60s and 70s is based on extensive newspaper and periodical research and interviews with nearly 70 former players, br...

Blackguards and Red Stockings

By William J Ryczek

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Blackguards and Red Stockings

By William J. Ryczek

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Crash of the Titans

By William J. Ryczek

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Tells how the New York Titans, who eventually became the New York Jets, survived the first three years of the American Football League.

Base Ball Founders

By William J. Ryczek, Leonard Levin, Peter Morris, Richard Malatzky, Jan Finkel

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"Base Ball Founders completes the series of histories of the clubs and players responsible for making baseball the national pastime. More than 40 clubs and hundreds of pioneer players are profiled...

Baseball s First Inning

By William J. Ryczek

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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.