Edmund L. Hartmann Books

The scarlet claw

By Roy William Neill, Edmund L. Hartmann

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Sherlock Holmes is called in to solve a series of murders in Canada that the locals are attributing to a legendary marsh monster.

Here Come the Co-Eds VHS

By George Robinson, Felix Adler, Edmund L. Hartmann, John Grant, Arthur Hilton, Arthur T. Horman

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Abbott & Costello: Naughty Nineties VHS

By Edmund Joseph, Felix Adler, Edmund L. Hartmann, John Grant, Hal Fimberg, Clyde Bruckman

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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.