Allison Dolan Books

The Family Tree Historical Maps Book

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Journey Into the Past!Envision your ancestors' world--as your ancestors knew it--through hundreds of beautiful full-color reproductions of useful eighteenth and nineteenth century maps. The maps il...

The Family Tree Historical Maps Book - Europe

By Allison Dolan

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Journey to the Old CountryFrom Ireland to Italy, Portugal to Poland, Germany to Greece, and everywhere in between, explore your ancestors' European homelands through more than 200 gorgeous reproduc...

The Family Tree Historical Atlas of American Cities

By Allison Dolan

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Journey to the big city! Explore your ancestors' hometowns! This book guides you through American history by looking at the United States' sixteen most populous and historically influential cities,...

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.