Orpheus Collar Books

House of Hades

By Orpheus Collar, Rick Riordan, Rob Venditti

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Red Pyramid

By Rick Riordan, Orpheus Collar

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Blue Bloods

By Robert Venditti

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Select teenagers from some of New York City's wealthiest and most socially prominent families learn a startling secret about their bloodlines.

Kane Chronicles, The, Book One: Red Pyramid: The Graphic Novel, The-Kane Chronicles, The, Book One

By Rick Riordan

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Kane Chronicles, The, Book Two: Throne of Fire: The Graphic Novel, The-The Kane Chronicles, Book Two

By Rick Riordan

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Presents a graphic adaptation of the novel in which Carter and Sadie, offspring of an Egyptologist, embark on a worldwide search for the Book of Ra, but the House of Life and the gods of chaos are...

Throne of Fire

By Rick Riordan, Orpheus Collar

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Red Pyramid

By Rick Riordan, Orpheus Collar

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Oliver Tree vs Little Ricky ALIEN BOYS

By Orpheus Collar, Oliver Tree

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Oliver Tree vs Little Ricky ALIEN BOYS Hardcover

By Ryan Cady, Orpheus Collar, Oliver Tree

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Munch

By Orpheus Collar

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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.