Kathryn Browne Pfeifer Books

African American Soldiers

By Catherine Reef, Kathryn Browne Pfeifer, Neil Super

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761st Tank Battalion African American Soldiers

By Kathryn Browne Pfeifer

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It sucks.

Henry O. Flipper

By Kathryn Browne Pfeifer, Pfeifer

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Examines the life of the first African American graduate of West Point, including his dishonorable discharge from the Army which was reversed nearly 100 years later.

The Seven Hundred Sixty First Tank Battalion

By Kathryn Browne Pfeifer

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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.