Howard Schroeder Books

Walter Payton Scu 2 Sports Closeups

By Howard Schroeder, Jane Mersky Leder

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This day is mine

By Jane Claypool Miner

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Hospitalized for a mysterious cause, sixteen-year-old Cheryl discovers that she has leukemia and tries to come to terms with the implications of her illness.

New beginning

By Jane Claypool Miner

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Permanently paralyzed by a football injury, Steve must learn to develop new interests which will give him hope for the future.

The mummy

By Ian Thorne

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Recounts the plots of the 1932 Boris Karloff thriller "The Mummy" and of several later films in which ancient mummies return to life.

Creature from the Black Lagoon

By Ian Thorne

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Recounts the plots of the 1954 film and its two sequels which followed the career of an unfriendly half-man, half-fish creature discovered in a Brazilian lake.

The mummy

By Ian Thorne

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Recounts the plots of the 1932 Boris Karloff thriller "The Mummy" and of several later films in which ancient mummies return to life.

Frankenstein Meets Wolfman

By Curt Siodmak, Howard Schroeder, Ian Thorne

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Paddlewheelers

By H. R. Sheffer

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A brief history of paddlewheelers and their designers.

Trucks Sheffer H. R. Wheels.

By Howard Schroeder, Harriette Sheffer Abels

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Race cars

By H. R. Sheffer

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A brief history of automobile racing, highlighting different types of racing cars used over the years.

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.