Howard Schroeder Books

Marcus Allen

By Jane Mersky Leder

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A brief biography of the star running back of the Los Angeles Raiders football team.

Martina Navratilova

By Jane Mersky Leder

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A biography of the tennis player, originally from Czechoslovakia, who was ranked as the top woman tennis player in the world in 1978, 1979, 1982, and 1983, and has become the highest-paid woman ath...

Moses Malone

By Jane Mersky Leder

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A biography of an outstanding basketball player, a member of the Philadelphia 76ers.

Fernando Valenzuela

By Carolyn Gloeckner

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A biography of the baseball player from Sonora, Mexico, who since 1980 has been setting records and winning honors as a pitcher for the Los Angeles Dodgers.

Marvelous Marvin Hagler

By Carolyn Gloeckner

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A biography of the middleweight champion chosen Boxer of the Year of 1983 by the World Boxing Council.

Black Friday

By Carl R. Green

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A mad surgeon replaces part of his friend's damaged brain with the brain of a criminal and unleashes a series of violent events.

Bride of Frankenstein

By Carl R. Green

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While the wounded and frightened Monster he created spreads terror throughout the country side, Dr. Frankenstein is persuaded by a colleague to create a woman to be the Monster's bride.

Ghost of Frankenstein

By Carl R. Green

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Dr. Frankenstein's monster returns from a pit of liquid sulphur to create new havoc.

The Mole people

By Carl R. Green

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A team of archeologists digging in the Middle East discovers an undergound civilization of mole people.

Tarantula

By Carl R. Green

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A giant tarantula gets loose from a laboratory and terrifies the people in an Arizona town.

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.