Kathleen Krull Books

Lincoln Tells a Joke: How Laughter Saved the President

By Kathleen Krull

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A biography of one of America's greatest presidents, focusing on his use of wit and humor, and his love of language.

Lives of the Musicians: Good Times, Bad Times

By Kathleen Krull

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Lives of the Writers: Comedies, Tragedies

By Kathleen Krull

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Lives of the Musicians: Good Times, Bad Times

By Kathleen Krull

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Here are the life stories of such diverse figures as Vivaldi, Mozart, Scott Joplin, Nadia Boulanger, and Woody Guthrie. Readers will learn of both their musical natures and the personal, humorous c...

Songs of Praise

By Kathryn Hewitt, Kathleen Krull

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Wilma Unlimited

By David Diaz Kathleen Krull

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V Is for Victory

By Kathleen Krull

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The Boy on Fairfield Street

By Kathleen Krull

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Introduces the life of renowned children's author and illustrator Ted Geisel, popularly known as Dr. Seuss, focusing on his childhood and youth in Springfield, Massachusetts.

A boy named FDR

By Kathleen Krull

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Focuses on Franklin D. Roosevelt's childhood years and summarizes his achievements as president.

Jim Henson

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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.