Zilpha Keatley Snyder Books

The box and the bone

By Zilpha Keatley Snyder

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While building a clubhouse, the boys uncover a buried treasure, only to have it disappear later that night.

GHOST INVASION Castle Court Kids

By Zilpha Keatley Snyder

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SECRET WEAPONS Castle Court Kids

By Zilpha Keatley Snyder

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Cat running

By Zilpha Keatley Snyder

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When eleven-year-old Cat Kinsey builds a secret hideout to escape her unhappy homelife, she slowly gets to know a poor family who have come to California after losing their Texas home to the dust s...

Changeling

By Zilpha Keatley Snyder

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Gib rides home

By Zilpha Keatley Snyder

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Despite the harsh treatment he has endured at the Lovell House orphanage, ten-year-old Gib Whittaker manages to maintain his hopeful outlook when he is "farmed out" to help with the horses of a wea...

The Gypsy Game

By Zilpha Keatley Snyder

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The kids from The Egypt Game are back. What game will they play next? The answer is Gypsies. While April plunges in with her usual enthusiasm, the more Melanie learns, the more something seems to b...

The Trespassers

By Zilpha Keatley Snyder

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The Runaways

By Zilpha Keatley Snyder

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Spyhole Secrets

By Zilpha Keatley Snyder

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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.