Theodore Roscoe Books

The Lincoln assassination, April 14, 1865

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Describes Lincoln's assassination, traces the disclosure of the murder conspiracy, and discusses the many clues that were never pursued which still remain to puzzle history.

The Trent Affair, November, 1861: U.S. detainment of a British ship nearly brings war with England.

By Theodore Roscoe

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Describes the incidents at the beginning of the Civil War that nearly led the United States into another war with Britain.

Tin cans

By Theodore Roscoe

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Pig boats

By Theodore Roscoe

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Pig Boats

By Theodore Roscoe

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Pig Boats

By Theodore Roscoe

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Z Is for Zombie Starmont Facsimile Fiction Ser. No. 2

By Theodore Roscoe

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Seven men

By Theodore Roscoe

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United States Submarine Operations in World War II

By Theodore Roscoe

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United States Destroyer United States Submarine Operations

By Theodore Roscoe

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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.