My 8 year old, second grader absolutely loves this series. He loves to read, but prefers nonfiction books. He's a sponge, craving more and more knowledge about everything from plants, animals, and the human body to historical facts and sights and geography. This is fantastic, but we have had a terrible time getting him interested in fictional stories. Those are important as well, and his teachers and I had tried many different book series trying to engage him but kept coming up short. One of the teachers at his school ended up gifting him a book from this series as a reward for his reading scores. Once he began reading it, he didn't put it down until it was finished. These books are fictional stories, written from a child's perspective, but are based on real historical events. They're perfect for him. I have purchased nearly the entire collection now. I've picked up a few at school book fairs and I purchased this box set. This set comes with 10 of the 20 books in the series and I believe it was the latest 10. It's an exceptional price compared to purchasing them individually and you get the survival tool, which he loved. I believe the books included with this are The Destruction of Pompeii, The Nazi Invasion, The Japanese Tsunami, The Battle of Gettysburg, The Attacks of September 11th, The San Francisco Earthquake, The Bombing of Pearl Harbor, Hurricane Katrina, The Shark Attavks of 1916, and The Sinking of the Titanic. I highly recommend these books.