Callie Barkley Books

Marion takes a break

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When she breaks her ankle, Marion must withdraw from the horse show but finds a way to stay active by helping her friends at the Critter Club animal shelter find homes for a litter of kittens.

Marion takes a break

By Callie Barkley

Average: 0.00, 0 Ratings

When she breaks her ankle, Marion must withdraw from the horse show but finds a way to stay active by helping her friends at the Critter Club animal shelter find homes for a litter of kittens.

Marion takes a break

By Callie Barkley

Average: 0.00, 0 Ratings

When she breaks her ankle, Marion must withdraw from the horse show but finds a way to stay active by helping her friends at the Critter Club animal shelter find homes for a litter of kittens.

Amy meets her stepsister

By Callie Barkley

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Amy is nervous about meeting her future stepsister, Chloe, but she is not prepared when Chloe first ignores her and then is downright mean. Book #5 Amy so looks forward to meeting her future steps...

Liz at Marigold Lake

By Callie Barkley

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Liz is excited that her three best friends are visiting her family's cabin at Marigold Lake, but something seems to go wrong with every activity she planned. Liz is excited that her three best fri...

Liz at Marigold Lake

By Marsha Riti, Callie Barkley

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Marion strikes a pose

By Callie Barkley

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While her friends in The Critter Club babysit frogs, second-grader Marion enters a fashion design contest. Book #8 While her friends in the Critter Club babysit frogs, second-grader Marion enters...

Amy s very merry Christmas

By Callie Barkley

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As Christmas nears, Amy and her friends in The Critter Club try to find a home for two adorable guinea pigs. Book #9 As Christmas nears, Amy and her friends in the Critter Club try to find a home...

Amy s Very Merry Christmas

By Marsha Riti, Callie Barkley

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Amy is a little bit chicken

By Callie Barkley

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Amy and her friends care for some chickens and prepare for the Santa Vista Quiz Bowl in the thirteenth book of The Critter Club series!

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.