Thomas Hoobler Books

In eighteenth-century Japan, fourteen-year-old Seikei, a merchant's son in training to be a samurai, helps his patron investigate a series of murders and arson in the capital city of Edo, each of w...

In Darkness, Death

By Dorothy Hoobler, Thomas Hoobler

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In eighteenth-century Japan, young Seikei becomes involved with a ninja as he helps Judge Ooka, his foster father, investigate the murder of a samurai.

The Sword That Cut the Burning Grass

By Dorothy Hoobler, Thomas Hoobler

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In his latest adventure in eighteenth-century Japan, fourteen-year-old samurai apprentice Seikei, with the help of a servant girl and an imperious old man, sets out to rescue the young Emperor Yasu...

We Are Americans

By Dorothy Hoobler, Thomas Hoobler

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A history of immigration to America, from speculation about the earliest immigrants to the present day.

Captain John Smith

By Dorothy Hoobler, Thomas Hoobler

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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.