Cynthia Fitterer Klingel Books

A biography of the wealthy woman who realized her ambition to live and work among the poor and founded Hull House, one of the first social settlement houses in the United States.

Harriet Tubman

By Cynthia Fitterer Klingel

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A biography of the runaway slave who risked her life to help other slaves escape to freedom.

Dolley Madison

By Cynthia Fitterer Klingel

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A biography of the First Lady who, among her other achievements, managed to save many state papers and a portrait of George Washington from the invading British who burned the White House in 1814.

Clara Barton

By Cynthia Fitterer Klingel

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A biography of the American nurse who brought the Red Cross from Europe to the United States.

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.