Mary Ellen Hayward Books

Maryland in the Civil War

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"The Architecture of Baltimore provides a comprehensive, narrative account of the city's rich architectural heritage, both lost and extant. The volume's editors and contributors - a distinguished g...

Baltimore s alley houses

By Mary Ellen Hayward

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The Baltimore rowhouse

By Mary Ellen Hayward

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"The Baltimore Rowhouse tells the 200-year story of this building type. It chronicles the evolution of the rowhouse from its origins as speculative housing for laborers and merchants in the 1790s a...

The Baltimore rowhouse

By Mary Ellen Hayward

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Maryland In The Civil War

By Mary Ellen Hayward, Robert I. Cottom

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Baltimore Rowhouse

By Charles Belfoure, Mary Ellen Hayward

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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.