Marc Simont Books

A giant of American humor makes his Penguin Classics debut with “probably the best book in the world” (Neil Gaiman, from the Introduction), in a stunning Deluxe Edition featuring the original, full...

The Wonderful O

By James Thurber, Ransom Riggs, Marc Simont

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Great American humorist James Thurber’s beloved, madcap, and eerily timely fairy tale about an island society robbed of the wonders of the letter O—in a stunning Deluxe Edition featuring flaps, dec...

Marc Simont at the Library of Congress

By Marc Simont

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Reddy Rattler and Easy Eagle

By Mitchell Sharmat, Marc Simont

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An ambitious rattlesnake is discouraged about his future until his eagle friend helps him make use of his natural talents.

The stray dog

By Marc Simont

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A family befriends a stray dog, names him Willy, and decides to keep him.

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.