Henry R. Schlesinger Books

The Battery: How Portable Power Sparked a Technological Revolution

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The first popular history of the technology which harnessed electricity and powered the greatest scientific and technological advances of the modern era. Line drawings throughout.

Brooklyn Bounce: The True-Life Adventures of a Good Cop in a Bad Precinct

By Henry R. Schlesinger, Joe Poss

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Spycraft

By Robert Wallace, Henry R. Schlesinger, H. Keith Melton

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The Battery: How Portable Power Sparked a Technological Revolution

By Henry Schlesinger

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The Battery

By Henry R. Schlesinger

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Spycraft

By George J. Tenet, Robert Wallace, Henry R. Schlesinger, H. Keith Melton

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An unprecedented history of the CIA's secret and amazing gadgetry behind the art of espionageIn this look at the CIA’s most secretive operations and the devices that made them possible, Spycraft te...

Honey Trapped

By Henry R. Schlesinger

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Honey Trapped

By Henry R. Schlesinger

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Spycraft

By Robert Wallace

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An unprecedented history of the CIA's secret and amazing gadgetry behind the art of espionageIn this look at the CIA’s most secretive operations and the devices that made them possible, Spycr...

Spy Sites of New York City

By Robert Wallace, Henry R. Schlesinger, H. Keith Melton

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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.