Jack E. Davis Books

Zack Files 06: I'm out of My Body...Please Leave a Message

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When Zack's friend Spencer brings a 60's-style hippie book on astral travel to a sleepover, Zack learns the ins and outs of out-of-body travel in a snap. Getting out of their bodies seems awfully e...

Zack Files 07: Never Trust a Cat Who Wears Earrings

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One minute, it was an Egyptian cat stature. The next, it was real, live cat with sharp claws. And I have the scratch to prove it! This was one trip to the museum I would never forget.

Zack Files 08: My Son, the Time Traveler

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After months of hoarding his allowance, Zack is on his way to buy a prized baseball card. But when he gets to the store, the owner tells him that someone else has just bought it. Who, you may ask,...

Zack Files 09: the Volcano Goddess Will See You Now

By Dan Greenburg

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Hawaii. Dream vacation. Same thing, right? Wrong! No sooner do Zack and his dad arrive at their hotel does strange things start happening to Zack. First he gets bonked on the head by a falling coco...

Zack Files 10: Bozo the Clone

By Dan Greenburg

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"My clone looks like me.My clone talks like me.He helps me with my homeworkand takes care of my bullies.And he could be the answerto all my problems.Or he could be my biggest one yet!

Dr. Jekyll, orthodontist

By Dan Greenburg

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While Zack is being treated by Dr. Jekyll, his new orthodontist, the doctor undergoes a strange transformation into a growling monster.

Never trust a cat who wears earrings

By Dan Greenburg

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Zack starts turning into a cat when the spirit of an ancient Egyptian cat goddess is accidentally transferred into his body during a class field trip.

Zack Files 08

By Dan Greenburg

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When Zack goes to a store to buy a baseball card, he finds himself face-to-face with his future son who has traveled back in time.

Storm Chasers

By Gail Herman

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Never trust a cat who wears earrings

By Dan Greenburg, Gail Herman

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Zack starts turning into a cat when the spirit of an ancient Egyptian cat goddess is accidentally transferred into his body during a class field trip.

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.