Correspondence Books

The Selected writings of John and John Quincy Adams

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Notable women in American history

By Lynda G. Adamson

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Letters to the lady upstairs

By Marcel Proust

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"A charming, funny, poignant collection of twenty-three letters from Marcel Proust to his upstairs neighbour 102 Boulevard Haussmann, an elegant address in Paris's eighth arrondissement. Upstairs l...

Selected letters of James Thurber

By James Thurber

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Letters covering the period of 1935 to 1961, from Thurber's confident prime as a writer and artist, to his last days when blindness and infirmity failed to quench the exuberance of his spirit or hi...

Botanik an der Technischen Universitat Darmstadt 1814-1970

By Stefan Schneckenburger, Elke Fischer Schliebs, Ulrich Luttge

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Der schriftliche Nachlass Johann Gottfried Schadows

By Reimar F. Lacher

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Witness to my life

By Jean Paul Sartre

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Joachim John

By Joachim John

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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.