Allen C. Guelzo Books

Abraham Lincoln the passage of the thirteenth amendment 1865

By United States. President 1861 1865 Lincoln

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Great Lincoln Documents

By The Gilder Lehrman Institute Of American History

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Reconstruction: A Very Short Introduction

By Guelzo Allen C.

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Fateful Lightning: A New History of the Civil War & Reconstruction

By Allen C. Guelzo

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Lincoln: A Very Short Introduction

By Allen C. Guelzo

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"Abraham Lincoln was a fatalist who promoted freedom; he was a classical liberal who couched liberalism's greatest deed - emancipation of the slaves - in the unliberal language of divine providence...

For The Union Of Evangelical Christendom The Irony Of The Reformed Episcopalians

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Our Ancient Faith

By Guelzo Allen C.

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An intimate study of Abraham Lincoln’s powerful vision of democracy, which guided him through the Civil War and is still relevant today—by a best-selling historian and three-time winner...

Redeeming the great emancipator

By Allen C. Guelzo

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The larger-than-life image Abraham Lincoln projects across the screen of American history owes much to his role as the Great Emancipator during the Civil War. Yet this noble aspect of Lincoln's ide...

Redeeming the Great Emancipator

By Guelzo Allen C.

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Lincoln s Emancipation Proclamation

By Allen C. Guelzo

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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.