Ruth Plumly Thompson Books

Pirates in Oz (Wonderful Oz Books, No 25)

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Return to L. Frank Baum’s wonderful world of Oz with this illustrated children’s book series. The old Gnome King attempts to capture the Emerald City and regain his magic belt, much to the horror...

Speedy in Oz (Wonderful Oz Books, No 28)

By Ruth Plumly Thompson

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Return to L. Frank Baum’s wonderful world of Oz with this illustrated children’s book series. Legendary Umbrella Island flies magically through the air . . . until it careens smack into the foreh...

The Wishing Horse of Oz (Wonderful Oz Bookz, No 29)

By Ruth Plumly Thompson

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Return to L. Frank Baum’s wonderful world of Oz with this illustrated children’s book series. Three emerald necklaces cause everyone in Oz to forget all about Princess Ozma, the Wizard, and Glinda...

The Royal Book of Oz

By Ruth Plumly Thompson

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Scarecrow searches for his family tree and discovers that he is the Long Lost Emperor of the Silver Island.

Giant Horse of Oz Wonderful Oz Books

By Ruth Plumly Thompson

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Purple Prince of Oz the Wonderful Oz Books No 26 Wonderful Oz Books

By Ruth Plumly Thompson

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Cowardly Lion of Oz

By Ruth Plumly Thompson

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Ojo in Oz Wonderful Oz Books No 27 Wonderful Oz Books

By Ruth Plumly Thompson

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Speedy in Oz Wonderful Oz Books No 28 Wonderful Oz Books

By Ruth Plumly Thompson

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Grampa in Oz

By Ruth Plumly Thompson

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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.