John Allan Carpenter Books

A historical and geographical description of the state and an account of the people who have lived there and recent industrial and cultural developments.

Colorado

By Allan Carpenter

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Presents the geography, history, resources, famous citizens, and places of interest of the Centennial State.

Connecticut

By Allan Carpenter

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Discusses the history, natural resources, and famous citizens of the Constitution State and describes numerous places of interest.

Delaware

By Allan Carpenter

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Discusses the history, places of interest, and famous people of the second smallest state in the nation, which also was the first to ratify the Constitution.

Georgia

By Allan Carpenter

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Presents the history, resources, famous citizens, and points of interest in the Empire State of the South.

Hawaii

By Allan Carpenter

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An introduction to the Aloha State, including its history, resources, famous citizens, and places of interest.

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.