Lewis K. Parker Books

John Jacob Astor

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Andrew Carnegie and the steel industry

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A brief biography of the Scottish immigrant who made a fortune in the steel industry and used much of it for philanthropic causes.

Cornelius Vanderbilt and the railroad industry

By Lewis K. Parker

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A short biography of Cornelius Vanderbilt, the steamship and railroad tycoon, focusing on his success as a business man.

Why German immigrants came to America

By Lewis K. Parker

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Explores German immigration to the United States from colonial days to the present, and looks at the contributions of German Americans to the culture of the United States.

Why Mexican immigrants came to America

By Lewis K. Parker

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Explores the history of Mexican immigration to what is now the United States, and looks at the contributions of Mexican Americans to the culture of their new country.

Why Italian immigrants came to America

By Lewis K. Parker

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Explores Italian immigration to the United States from the 1850s to the present, and looks at the contributions of Italian Americans to the culture of the United States.

Why Irish immigrants came to America

By Lewis K. Parker

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Describes the economic and social conditions which motivated poor Irish people to emigrate to America.

Why Japanese immigrants came to America

By Lewis K. Parker

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Explores Japanese immigration to the United States from the 1880s to the present, and looks at the contributions of Japanese Americans to the culture of the United States.

Spanish colonies in the Americas

By Lewis K. Parker

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Dutch colonies in the Americas

By Lewis K. Parker

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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.