Keith T. Krawczynski Books

William Henry Drayton

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"In this biography, Keith Krawczynski details the political and social career of William Henry Drayton (1742-1779), an ambitious, wealthy low-country planter and zealous patriot leader who was at t...

Daily Life in the Colonial City

By Keith T. Krawczynski

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Daily Life In The Colonial City

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Overview: The American city was an integral part of the colonial experience. Although the five largest cities in colonial America--Philadelphia, New York, Boston, Charles Town, and Newport--held le...

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.