Katherine Howe Books

The Physick Book of Deliverance Dane

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While readying her grandmother's abandoned home for sale, Connie Goodwin discovers an ancient key in a seventeenth-century Bible with a scrap of parchment bearing the name Deliverance Dane. In her...

The Physick Book of Deliverance Dane

By Katherine Howe

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A crime lost to time. A secret buried deep. One book unlocks an unimaginable truth. Salem, Massachusetts, 1681. Fear and suspicion lead a small town to unspeakable acts. Marblehead, Massachusetts...

The Physick Book of Deliverance Dane

By Katherine Howe

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A spellbinding, beautifully written novel that moves between contemporary times and one of the most fascinating and disturbing periods in American history–the Salem witch trials. Harvard graduate s...

The Daughters of Temperance Hobbs

By Katherine Howe

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The Daughters of Temperance Hobbs

By Barrie Kreinik, Katherine Howe

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Lost Book of Salem

By Katherine Howe

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The physick book of deliverance dane

By Katherine Howe

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The house of velvet and glass

By Katherine Howe

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In the News

By Judith Edelstein, Katherine Howe

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Money Matters

By Judith Edelstein

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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.