Donald Charles Books

Chancay and the secret of fire

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As a reward for releasing the beautiful fish he has caught, Chancay is granted his wish of finding a way to relieve his people from the cold and darkness.

Busy beaver's day

By Donald Charles

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Recounts a beaver's activities during one day.

Count on Calico Cat.

By Donald Charles

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A counting book depicting the contents of Calico Cat's garbage can including six shoes, seven rags, and eight wires.

Calico Cat looks around

By Donald Charles

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Text and illustrations introduce a variety of shapes.

Calico Cat's rainbow

By Donald Charles

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Calico Cat demonstrates the colors of the rainbow during his adventures with a mouse, a bird, and a snake.

Calico Cat meets Bookworm

By Donald Charles

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Bookworm introduces a bored Calico Cat to exciting books available at the library.

Calico Cat at the zoo

By Donald Charles

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Calico Cat visits various animals in the zoo, characterizing them as big, quiet, proud, funny, and many other adjectives.

Calico Cat at school

By Donald Charles

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Calico Cat spends a day at school.

Fat, fat Calico Cat

By Donald Charles

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After suffering from eating the wrong kinds of foods, Calico Cat discovers the benefits of a proper diet.

Calico Cat's exercise book

By Donald Charles

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Calico Cat demonstrates various exercises to his class of mice.

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.