Sidney Kirkpatrick Books

A cast of killers

By Sidney Kirkpatrick

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True Tales from the Edgar Cayce Archives

By Sidney Kirkpatrick, Nancy Kirkpatrick

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Hitler s holy relics

By Sidney Kirkpatrick

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Tells the riveting true story of how an American college professor turned Army sleuth recovered cherished symbols of Hitler's Thousand-Year Reich before they could become a rallying point in the cr...

Hitler's holy relics

By Sidney Kirkpatrick

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The Revenge of Thomas Eakins

By Sidney D. Kirkpatrick

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Edgar Cayce

By Sidney D. Kirkpatrick

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"In this definitive biography Sidney Kirkpatrick offers a portrait of Edgar Cayce with an entirely new perspective on his life and legacy. The only author to have been granted unrestricted access t...

Edgar Cayce

By Sidney D. Kirkpatrick

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With unprecedented access to Edgar Cayce's private letters and trance readings, Sidney Kirkpatrick delivers the definitive biography of the renowned psychic, religious seeker, and father of alterna...

A Cast of Killers

By Sidney Kirkpatrick

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Un Elenco De Asesinos

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UN Reparti De Asesinos

By Sidney D. Kirkpatrick

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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.