Janet Ahlberg Books

The Jolly Christmas Postman

By Janet Ahlberg, Allan Ahlberg

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Bye Bye, Baby: A Sad Story With a Happy Ending

By Janet Ahlberg, Allan Ahlberg

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A baby with an aggressive nature who lives alone manages to acquire a mommy, a daddy, and several other acquaintances to live with him.

The Jolly Postman

By Janet Ahlberg

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The Jolly Postman: Or Other People's Letters

By Janet Ahlberg

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A Jolly Postman delivers letters to several famous fairy-tale characters such as the Big Bad Wolf, Cinderella, and the Three Bears. Each letter may be removed from its envelope page and read separa...

The Baby's Catalogue

By Janet Ahlberg

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Babies, their families, and familiar objects and activities are depicted in whimsical drawings which present the daily routines of the lives of babies and their parents. Includes some vocabulary wo...

The Baby's Catalogue

By Janet Ahlberg, Allan Ahlberg

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The Jolly Postman Postcard Collection

By Janet Ahlberg, Allan Ahlberg

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Baby's Catalogue, The: Baby Sleeps

By Janet Ahlberg, Allan Ahlberg

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Simple text and illustrations present the various activities that fill a baby's day.

Doll and Teddy

By Janet Ahlberg

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Baby's Catalogue, The: See the Rabbit

By Janet Ahlberg, Allan Ahlberg

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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.