Margaret Hillert Books

Merry Christmas, dear dragon

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A boy and his pet dragon share many winter activities and celebrate Christmas by chopping down and decorating a tree, making cookies, and sitting by a fire.

It's Halloween, dear dragon

By Margaret Hillert

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A boy and his pet dragon play in the autumn leaves, make a jack-o'-lantern, eat pumpkin pie, dress in costumes, go trick-or-treating, enter a costume contest, and fly together.

I love you, dear dragon

By Margaret Hillert

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A boy and his pet dragon celebrate Valentine's Day by noticing all the red things they see, making Valentines, and eating a Valentine cake.

Happy Easter, dear dragon

By Margaret Hillert

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A boy and his pet dragon celebrate Easter by enjoying the spring flowers and baby animals, coloring eggs, making an egg tree, hunting for Easter eggs, marching in the Easter parade, and going to ch...

The purple pussycat

By Margaret Hillert

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A stuffed pussycat comes to life at night and sets out to explore the world.

City fun

By Margaret Hillert

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As two girls explore the city, they watch buildings being torn down and built, ride the subway, visit the park, watch a parade, play games, and visit the library.

Who goes to school?

By Margaret Hillert

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Simple text and illustrations depict animals in various work and training situations and conclude that school can be fun for animals and for boys and girls.

Up, up, and away

By Margaret Hillert

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Two children travel to the moon in a spaceship, do some exploring, and come back home again.

Tom Thumb

By Margaret Hillert

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Easy-to-read text relates a tiny boy's adventures in a cow's mouth, a fish's belly, on the back of a mouse, and at a king's table.

Let's have a play

By Margaret Hillert

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On a rainy day, two children decide to make paper-bag puppets and put on a play for themselves and their parents.

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.