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Series

Unexplained Mysteries

Released on 1 January 2015

Do you embrace mystery? Or do you need to see it to believe it? This series will challenge your position as you explore the unexplained. Real or not, Bigfoot and the other phenomena in these… More →

 

Unexplained, The

Released on 1 August 2011

The world is full of mysteries. Do Bigfoot, the Loch Ness Monster, and ghosts exist? Can people really use ESP to see events with their mind? Has wreckage from a UFO been recovered? What are… More →

 
Spring 2026

U.S. Government Buildings

Released on 1 January 2026

 

U.S. Military

Released on 1 January 2013

The United States military is the largest in the world. The Air Force, Army, Coast Guard, Marine Corps, and Navy work together to protect the interests of the United States and its allies… More →

 

U.S. National Parks

Released on 1 August 2022

Put on your hiking boots and get ready to explore mountains, canyons, coastlines, and more! This series takes readers on a trip to some of the most popular national parks in the United… More →

 

War Histories

Released on 1 August 2023

From the American Revolutionary War to the Cold War, conflict has been present throughout much of history. Through leveled text and vibrant, accurate images, this engaging series introduces… More →

 

Watch Animals Grow

Released on 1 January 2009

How are lambs different from sheep? How are fawns different from deer? This series shows the growth of animals from birth to adulthood. Eager learners will enjoy following animals through… More →

 

Weather

Released on 1 August 2006

Why does lightning form and strike? Why does rain fall from the sky? What are the different kinds of clouds? These questions and more are answered in this series that provides young readers… More →

 

Weather Forecast

Released on 1 August 2022

Grab your umbrella, because it looks like rain is in the forecast! In this series, young readers will learn about different parts of the weather and how they can change the world around us.… More →

 

What Animal Am I?

Released on 1 August 2022

There’s a wonderful world of animals to explore! This series for beginning readers introduces animals of different biomes through leveled text and vibrant photos. Written in the first person, More →

 

Who Is Cuter?

Released on 1 August 2024

Which animals have the cutest babies? Each book in this adorable series compares two baby animals. Colorful photos highlight the similarities and differences of each baby. Simple text guides… More →

 

Who's Hoo? Owls!

Released on 1 August 2023

Who flies silently, can have a wingspan that ranges from just inches to over 6 feet, and has killer talons? Owls! This series introduces early readers to different species of owls. Each page… More →

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