Doug Hansen Books

Wake Up ... Live the Life You Love

By Ken Connelly R. Rene Schooler Doug Hansen

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Mother Goose in California

By Doug Hansen

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An alphabet book featuring traditional Mother Goose rhymes with illustrations that relate to California culture and geography.

Super Silly Yosemite Sticker and Activity Book

By Doug Hansen, Katherine Brumage

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Aesop in California

By Doug Hansen

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A collection of Aesop's fables, retold and illustrated to feature places and creatures in California. Includes historical notes about Aesop and the tales, and facts about the animals and locations...

California the magic island

By Doug Hansen

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Summoned by Queen Calafia to the island of California, twenty-six animals of the state of California introduce themselves, their homeland, and the people who dwell there.

Super Silly Yosemite Sticker and Activity Book

By Doug Hansen, Katherine Brumage

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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.