Christopher Pryslopski Books

America s first river

By Thomas S. Wermuth

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Key to the Northern Country

By Christopher Pryslopski, Johnson James M., Andrew Villani

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Key to the Northern Country

By Christopher Pryslopski, Andrew Villani, James M. Johnson

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"The Hudson River Valley, which George Washington referred to as the "Key to the Northern Country," played a central role in the American Revolution. From 1776 to 1780, with major battles fought at...

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.