JOHN DEVANEY Books

Creme de la Creme Volume Three

By John Devaney, Peter Vasic

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Star pass receivers of the NFL.

By John Devaney, Devaney John.

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Brief career biographies of nine pass receivers in pro football. Included are Otis Taylor, Fred Biletnikoff, Paul Warfield, Lance Alworth, Charlie Sanders, Bob Hayes, Raymond Berry, Don Maynard, an...

Gil Hodges: baseball miracle man.

By Devaney John.

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A biography of the star of two championship Dodger teams and the manager of the championship New York Mets.

Gil Hodges: baseball miracle man.

By Devaney John.

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A biography of the star of two championship Dodger teams and the manager of the championship New York Mets.

The picture story of Terry Bradshaw

By Devaney John.

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A biography of the quarterback for the Pittsburgh Steelers.

Bo Jackson

By Devaney John.

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A biography of the first person to play on both a major league baseball and football team.

Bo Jackson

By Devaney John.

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A biography of the first person to play on both a major league baseball and football team.

America on the attack, 1943

By Devaney John.

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Focuses on individuals and events representing significant moments in World War II during 1943, both on the battlefield and at home in the United States.

A story of glory

By Devaney John.

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System Critical

By J. Devaney

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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.