Susan E. Edgar Books

The Mission of California Mission San Diego de Alcala

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Discusses the founding, building, operation and closing of the Spanish Mission San Diego de Alcalá and its role in California history.

Mission San Carlos Borromeo del Rio Carmelo

By Kathleen J. Edgar

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Discusses the founding, building, operation and closing of the Spanish Mission San Carlos in central California and its role in California history.

Mission San Francisco de Asis

By Kathleen J. Edgar

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Discusses the Mission of San Francisco de Asís from its founding in 1776 to the present day, including the reasons for Spanish colonization in California and the effects of colonization on the Ohlo...

Mission San Juan Capistrano

By Kathleen J. Edgar

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Discusses the Mission San Juan Capistrano from its founding in 1776 to the present day, including the reasons for Spanish colonization in California and the effects of colonization on the Acagcheme...

Life stories of 100 famous women

By Susan E. Edgar

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Hearts of Gold

By Susan E. Edgar, Denise Rinaldo

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Dare to dream

By Denise Rinaldo

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Against the odds

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50 American women of courage & vision

By Susan E. Edgar

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Compassion

By Kathleen J. Edgar

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Short biographies of men and women whose lives and work embody the value of compassion.

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.