Leonard M. Marcus Books

Lifelines

By Leonard M. Marcus

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A collection of poems by such authors as William Blake, James Whitcomb Riley, and Robert Louis Stevenson.

Ways of Telling Fourteen Interviews With Masters of the Art of the Pict

By Leonard S. Marcus, Leonard M. Marcus

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A collection of interviews with fourteen artists and writers of picture books who, regardless of their country of origin, have had a major impact in the United States

Storied City

By Leonard S. Marcus, Leonard M. Marcus

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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.